I had originally thought cotton, but do you think it will still absorb? Maybe because it's a cotton/wool blend it'll work? Also, I don't want HEAVY socks, but do you think something like a DK weight would be good for cushiony, or is thin the way to go?
I realize it may be preference, but I want some input!

Thanks for your help so far!
ETA: I just saw that Vickie Howell's athletic sock pattern uses Cascade Fixation, which is DK and nearly all cotton with a bit of elastic. Seems the way to go! Thanks, everyone

Perhaps KP Shine Sport? No elastic, but I wonder if I knit the whole thing in K2P2 rib it'd be good...? We might have to try it out!