As a girl, I'm going with Urataros.
Because that guy can string a lot of girls (minus the time he got rejected, trying to sway another girl away from D-Yuuto), with his words alone. Which, is seriously the MAIN charm-point of that guy (even I actually couldn't resist his sweet-talks! Urgh... ><; )
Otoya just makes me want to punch him, like how Yuri always does that.