Ok after an entire day of listening and comparing, I can say this. If your on a budget of around $500 and want just one good all-round headphone then I would absolutely recommend these, not sure what else outside of maybe a Sundara (Which I haven't heard) can do most genres this well. But if you start comparing these to a more specialized headphone with a specific sound signature your looking for or are willing to go higher priced ($800+) you can probably skip these.
These are very good at $500. But their biggest problem is they either don't excel at anything and are just good/great, they don't have the clear detail retrieval you get at higher priced brackets and/or they cant handle a lot of various sounds going on at once and start sounding muffled, instantly losing any sort of clear sound they had going on.
For songs with not a lot going on, I prefer these over my other headphones most of the time. The mids here are wonderfully done and most vocals sound pretty balanced. The bass is very punchy and holds its own with any headphone (as long as your not a basshead) as its very tastefully done, punchy and fun. The imaging is on point as long as there aren't too many instruments going on and the soundstage is just big enough to not desire any more. But many songs have a section or two that add a few too many instruments and all of a sudden the headphones turns from a great experience to something fairly mixed and muffled for x amount of time ruining the flow. These drivers just cant handle a lot of things going on at once and I personally cant overlook that.
Quick summaries vs my other headphones:
The AD1000X destroys it for any vocal performance, soundstage and anything based on brass instruments but loses at everything else. It can be had for $200 used ($250 new) and is a great specialized can for that purpose.
The T1.2s have equally as good punch for the bass while retaining much much more texture. The soundstage is infinitely bigger with all instruments having more room to breathe, better separation and more detail retrieval. The SR2 has better vocals then these and feels more consistent/intimate, generally working with a nicer with variety of genres. But it cant touch the songs the T1.2 does work great for, which is more about how picky the T1.2 is vs the SR2 being better at something. The T1.2 can be had anywhere from $500 used to $800 dollars new.
The LCD-2-Classics are detail kings compared to the SR2. Almost any song I picked, there was constantly music in the background that I can clearly hear on my LCD2 in half a second of putting it on that is just not present on the SR2. Once again instrument separation is much more coherent on the LCD2 with very distinct separation vs the much closer together sound of the SR2. LCD2's play less mastered songs in a nicer laid back way that doesn't ruin the music, SR2 just gets overpowered and loses its tonality. The LCD-2's also give a more life like sound to the background instruments where the SR2's do a better job with sounds that are more present. SR2's few clear points up on the LCD2's are the mids/vocals being way more forward with a more full/lush sound and it's punchier bass. This makes the SR2 a pretty great choice for Hip-Hip and simple pop vs the LCD2 but the LCD2 wins in just about everything else. The LCD2-C is $650-ish used to $800 new.
Overall, if I didn't own any of my current gear and just had this I would like it a lot for the price. Most of the time when I didn't take time to compare the SR2s directly to my other headphones I thought they sounded great and was able to look past its flaws! It was only when I took them off, rewound a song and replayed it on another pair of headphones did I instantly hear the flaws it does posses. It does a great job putting an overall signature that sounds well made and hides what it cant do, but if you already own higher end gear I don't see a real reason to buy this as it doesn't really exceed at anything.
Its going back for me, but I'm glad I got to hear it and I probably have a new recommendation for the $500 headphone person that only wants a single pair of headphones.