To me superior means when a headphone is on a higher level in terms of transducer design and a level of sound details it can bring to live. None of 5xx headphones are superior over another in that matter. All of them share very similar capabilities and limitations, becasuse they come from the same family of headphones. That's why many people actually prefer HD518 and HD558 over 598's, thanks to slightly different tonality more to the liking of average consumer. Some people believe in a myth that between 5xx models there's a huge gap, especially between lower and highest end models. It really isn't, which was in recent years already confirmed multiple times by many respected reviewers and the price difference between them is totally unjastified. Both 598SE and CS represent same level of sound detail to my ears. It's more apparent in Cs thanks to closed design, but it doesn't show any details I couldn't hear on SE. Open design preference doesn't make any headphone superior to closed ones and seems you just prefer open. After listening to SE I came to realization that if I want both worlds in a form of open design, meaning spacious soundstage, and immersive experience, I'd have to go for something at least HD650 in sennheiser lineup. Immersion is so much better in Cs than SE. It's at the cost of soundstage becasuse again it's "just" 5xx model, but it gives warm dark kind of liquid tonality that I prefer over SE, regardless of CS's own flaws. That is something 598's unfortunetly doesn't posses, therefore is less enjoyable to listen to. Yes CS are less versitile headphone, but what's a con in watching movies is a pro when it comes to music, and that is the case with background sounds. They're more elevated in Cs, which can be sometimes weird in some movies, but it's a great benefit when listening to music. So to me SE are good versitle headphone for everything, but CS excels them for pure music experience, and they're not really that much useful for other purposes.
In SE bass is not only light, it lacks definition, it's there but it's wooly. I can imagine it can be good bass for someone who prefers super flat analitical signatures. Anyone else who is still not a basshead, but prefers slightly more enjoyable warmer tonality will be left with desire for more. CS have textured crunchy and more extended punchy bass, even better than HD600. That bass along with closed design creates much more immersive experience. That's why youtubers like Aornic and DMS3 prefer them over SE, and so is the case with my preference and many others. I'm very curious about opinions of two other respected youtubers Zreviews and HiFi Man on that matter. Both of them soon will be reviewing CS.
I read all reviews of SE, and in most of them gaming is brought to one of the most important, and in many cases most important aspect of buying headphones. At least that is the case on amazon.com reviews. This is nothing surprising since HD598 is one of the most recommended models to people who ask for a good pair of gaming headphones and initially looking for something like razer or beats. On he other hand, if look at the amazon.ca reviews most of them are focused purely on music. That's why in my opinion CS have 4.5 stars on amazon.ca
Originally 598 ivory were for 300$, then dropped to 250$ then dropped to 150$ as a regular not discounted price. Don't forget CS may be 99$ at the moment, but it's just a discountend limited time offer, not a regular price. Their regular price is still 249$, 100$ more than Ivory/SE.
"Used & new" containt open box returns too, and that's most cases there's barely any sealed units there, that's why I just look for one general number for comparison.
Right now CS have 62% 5-star review, while SE/ivory have 78%, but the latter have 10x more reviews, and before typical black friday wave of returns, CS had similar % of 5-star reviews. Does it make it spectacular for SE? No to me id doesn't. It would be spectacular if product had 90%+ 5-star reviews with overall 5-star score as well. Yes there are many products on amazon with this score.
I don't argue 598s are very good and one of the best open headphones in 150$ price range, but so are CS's. I think when it comes to pure sound quality regardless of design SHP9500 (they're very often compared to HD650's which is shocking to me) and sony's mdr1a can be better options, or even sennheiser's momentum 2 when they're on lightining deals. That is something I need to verify before I stick to given pair for good. I'll try to test 598's ivory as well after your thoughts about them vs SE's.
I don't know if average consumers like us can measure superiority in terms of transducer design. Most of us are not audio engineers. For most of us it's all about how they sound, or as you put it "a level of sound details it can bring to life." The closer a headphone can sound to the real thing, a live performance, the better it is IMO. That's why I think the open 598 sound superior to the Cs. How much that has to do with open vs closed vs tonality vs possibly different drivers vs other tuning methods, I don't know. It's impossible for me to quantify how much is due to this or that. I only care about the end result - the sound they reproduce. I just know the open 598 sound more natural and true to life to me. That's why for me, they are superior sounding. You obviously disagree, which is fine.
As far as the HD 650 goes, I've owned it for about a month now, and I don't consider it to be superior sounding over the 598, overall. It does some things better than 598, while the 598 does some things better than the 650. In the 650, I can hear the more neutral and balanced tonality, smoother and more refined vocals, and a bit more resolution/texture. However, the 598 is more musical and engaging overall, due to more upper bass, warmer low mids, slightly boosted mid-treble, and a bigger soundstage. So with those 2 cans, I would not say one is superior over the other, because both are very, very good. Maybe if I had better amp for the 650, my opinion would change. As it stands now, I prefer the more fun, engaging, and musical nature of the 598.
That "warm dark kind of liquid tonality" that you prefer in the Cs over the SE.........I prefer a warm headphone too, and if your SE sounded proper, you should have heard just enough warmth in the bass and low mids. However, too much warmth, many will say sounds muddy, or lacks detail or transparency. For example, I think the PX100-II sounded way too dark and warm for my taste. Either you or someone else mentioned here that after listening to the Cs, then going back to the PX, the PX sounded muddy. I think the 598 has just the right amount of warmth down low. Again, maybe your SE sounded different than my ivory, or maybe you just prefer a much warmer and darker sound than I do.
I think you are confusing "immersion" with immediacy. The open 598 definitely immerses you in the sound. It's part of why gamers and movie watchers like them too. You feel like you are in the middle of the crowd at a venue, surrounded by sound coming from various directions and distances. So the open 598 definitely sound immersive to me. From most of your posts, it seems you prefer a more immediate sound, like sitting in the first few rows of the venue, where the music is more immediate and in your face. To me, that's too loud and blaring, and the music is too bunched up at that distance because it's played at a loud volume so it can fill the entire venue with sound, but that sounds too loud for the people sitting up close. Another analogy is a movie theater. The screen is huge. Most people prefer to sit in the middle to the back of the theater. Very few actually prefer to sit in the front because the image is just too large to take everything in all at once at that short distance.
Not all background sounds are elevated in the Cs. The high mids, maybe low treble are elevated. The low mids, high bass, and upper treble are recessed relative to the high mids and low treble that are elevated. The open 598 are a more balanced headphone, only really lacking low bass (mid-high bass is fine). I agree the low-mid bass on the Cs is better, at least in terms of level. I don't agree that the bass in the 598 is "wooly" or lacks definition. I listen to a lot of classic rock and individual bass guitar notes are clearly audible in the open 598. Overall, I do think the Cs has better bass output. Not sure I'd say one is more defined than the other in the bass. I'd have to do closer listening comparisons to determine that. As I've said before, I do think open 598 has better definition, detail, and resolution, overall (not just bass).
You read ALL reviews of the SE on Amazon.com? Really?! Wow, that must've taken a long time and have been pretty boring (or maybe not, maybe you enjoy that, lol). I find most Amazon reviews useless when it comes to headphones, mostly because they are too short and don't offer enough information. There's the occasional good and thorough review that's helpful. Anyway, I doubt most buyers buy them for gaming. I'd be willing to bet most use them for music, some for gaming, some for both. Does it really matter??
Not sure where you're getting that original 598 originally sold for $300. Camelcamelcamel's Amazon pricing history says otherwise. My point was that it took years for the ivory 598 to drop from its $250 initial price to it's now roughly $150 price. It's only been 3 months for Cs and one month after black friday special, and it's again selling for $100. I understand black friday discount, but why discount them now? Probably because they weren't selling that many at the higher prices, and they're not as expensive to manufacture so they can afford to sell them at that price and still make a decent profit. If they could get acceptable sales numbers at $250 or $150, you don't think they would price them higher?
I'm sure there are many products on amazon with a 90% or more 5 star reviews, but we're discussing headphones here. I think you set your criteria for "spectacular" too high. Why? Because even the HD 600, regarded by many as the best dynamic headphone in the world for many years, only manages an 85% 5 star rating. So I guess what many regard as "the best dynamic headphone in the world" does not have spectacular amazon ratings to you?
I think you might enjoy Momentum 2.0. I have not heard them personally, but they've been described as bassy, with rolled off treble. I'm just not sure they'll have the forward mids that give the immediacy that you're looking for, because the bass might overpower the mids. I'd be interested in reading your impressions if you get them, along with the SHP9500.