Shure SRH 840 have a warm sounding, they seem to be very good allrounders.
Shrue SRH 940 are pretty neutral. Its rare for closed cans to be that neutral, so thats worth a shot.
Custom One Pro can be a good choice. Easy to drive, build like a tank, Bass slider might also be very helpful, depending if you want more or less bass.
The AKG 2xx series... i personally dont find that attractive. I would more likely try the K550.
Sony MDR1 should also be pretty neutral/natural.
Like i said, NOONE would be able to tell you "buy xxxx, thats the best for you and for your price", since noone knows what you will like.
You should better chose 2-4 headphones, and just try them out. The less you can try, the more i would start with the CoP, so with the slider you have pretty much 4 headphones in one, so thats a good start to find out, how much bass you like/want.