It depends on the group of males/females. For ages, I had far more male friends because I'd lost all trust in girls (one friend turned the rest of the group against me, yadda yadda), and because guys are generally easier to lark around with. I often insult my friends as a way of showing affection, and guys take that better than girls do.
Having said that, I've managed to find a group of girl friends who aren't stupidly bitchy, and who I can insult and be stupid with. There's just not enough girls like this around!