I've only ever dated really skinny muscle deprived guys.. on the shorter side of average.. and only had sex with the same. I'm afraid of big guys and hate too much muscle. I like close to me skinniness, it feels more comfortable, not that I've ever been with a big guy.
I like my men skinny and VERY tall. But I also like bigger, stronger men...Like KC said - depends on the guy.
I don't mind my men a bit chubby but obesity is a turn-off. Size doesn't matter so much to me; Personality is far more. My ideal physique is the rower's -- tall with broad shoulders but not as bulky as rugger player's. Tall and thin is great on a man but don't mind the slighty chunkier Boris look either if he carries his weight well and with aplomb.
Women and their orificence... I heard a radio ad last night (KTU-NY) about how men are deluded into thinking length is what matters whilst women prefer girth.