I'm running Firestone Destinations right now (33x12.50 R15's). It's a very good tire but probably not aggressive enough for your taste (not mine either but it's what I needed at the time). I'll be going more aggressive next time I need new skins but I haven't decided on what yet. I've always been a fan of the Mickey Thompsons but I hear they don't wear well.

Probably these:

http://4wheelonline.com/Mickey_Thomp...s.67201.242991