Oops my mistake. I mixed them up with something else; too much going on today. I can't say which would have more bass then as I haven't tried the new Denons.
Since you already have the Bose, you might consider trying to go to a store and listen to some headphone and compare them. It's hard to really know what you'll like until you hear them. You could also take the Bose so that you could do side by side comparisons. You will likely hear a big difference in comparison to the Bose (depending on what headphones you can demo).
Another thing you might consider is getting something in the $200-$300 range and spending the remainder (or part of it) on a DAC and maybe an amp. This will help maximize the potential of whatever headphones you use. It's important to remember that there are diminishing marginal returns in audio quality as you increase the price of your headphones. A $500 headphone will not be 2x as good as a $250. Realistically it may be 10%, though the difference might be lower if you have lower quality music or the source that you're playing it from is poor. Just another thing to consider.
I highly recommend the Denon D2000 or D5000 if you have some extra cash. They have a fun sound with deep bass, are very comfortable, and seem to perform most genres of music well. The downsides are that they are big and a bit fragile.
Here's a question for you. Have you had a chance to try out your QC15s? If so, what were your thoughts about how it sounded? Bose gets bashed around here (and they do deserve some of it) but there stuff is still usually much better sounding than a lot of the mainstream junk that is marketed to teens.
I'm still very very new to the high performance headphone world, hence, I'm not sure how an amp would work. I do know it's something that vastly improves the sound quality coming from a source.
My current source is a 4th generation iPod Touch. I stand to be corrected, but amps can hook up to iPods and the headphones can hook up to the amp, right?
My music files are mostly 320kbps, though there are a few tracks here and there that are 256, 192, or even several that are 128kbps.
I was actually planning on purchasing the D2000s until I found they were no longer available by searching the Denon website. There, I found the D600s.
Yes, I've been using my new Bose sets for the past few days. The bass is a little muddy I think, and I certainly wouldn't call the sound quality amazing. They are good, probably not worthy of all the bashing that's true, but they are not exceptional. I was expecting to be blown away by clarity and precision of sound for a $300 headphone, but instead, it sounded about as good as my UE IEMs. I can confirm that the QC15s are about a whole level better than the Beats Studios. I tried them both at the store, and all I got from the Beats was a tidal wave of bass and the clarity of a Skullcandy IEM. The Beats' sound quality to price ratio is much lower than the Bose's. Studios are worth no more than $80.
My question now is if the D600s will have enough bass to satisfy my basshead leanings. How would you compare the power of the bass of the D600 (or D2000s) to that of the Bose offerings, or even the Studios? I'm not talking about clarity and punch and stuff, there's no comparison there, but I'm wondering about the power, the thump - will they have comparable power when called for?