I assume this is a response to my question?
So you mean ditch HD668b and get either of the 3? Does the Evo in your post points to "Superlux HD681 Evo"? SR850 is the presonus so it means it same with the 681b? Seems I leaning with the Evo. Have read some reviews and I think it fits what I am looking for. Good thing they have it on my local store. One concern, I'm asian and the evo is not adjustable. Will it still stay in my head while drumming? I tend to make a groovy head movement but far from head bangin'.
Thanks! You comment really helped me. =)
The Evo is self-adjusting.
Evo = 681 Evo.
SR850 = 668B.
Go for Evo, unless you need a neutral sound presentation, in which case go with SR850.