I think they prefer circumcised my self. Never had any complaints.
I've been with both and I have a slight preference for the uncircumcised
penis (more variety and it feels a little better). But I wouldn't
discriminate either way. Just like penis size, how much skin is there is
less important than how the guy uses it.
Circumcised. It's safer for the men because otherwise they get bacteria and other stuff under their foreskin.