Have you completely given up on the HD650's?
Honestly, since I got mine I havent even bothered with any other can.
I never really "gave up" on them. My pair had been used so much in the 2+ years that I owned them that the headband broke. I never stretched them, it was simply due to extensive use. I did a primitive repair and they sounded the same but my curiosity forced me to sell them and move on to other options. There was nothing about them that I didn't like and all genres "worked" with the HD 650 for me which is not an easy task I've discovered.
I wish I had a new pair now to enjoy, not to say that they outrank my T1. I could be happy with just the HD650 forever if I had never moved on. If you like them as much as it seems to me, then there really is no need to try any other HP.
There are other more expensive ( and even less expensive) HP's that do some things better but unless you manage to get to a meet or are lucky enough to have a shop nearby that carries a wide range, you may never know what you're missing...or not. It's a dangerous game, this audio thing. :music-listening: