I like these socks. They are tight enough without being too tight (I'm a size 8 in shoes.) They're also low on the ankle, but don't slip down over your heel. They're really expensive but I think they're worth it. The only con is that you end up with a lot of black lint stuck to your feet for the first few uses. I would buy them again.

EDIT: It is now 2017 and I've had these socks for 5 YEARS and they still leave black lint on my feet. I've docked my rating for that.