Hey guys, my specialized hardrock is getting old and has more problems that worth fixing. I'm looking for another good bike for dirt jumping. My max is $600. I've looked a Gary fishers, but all my friends say they are crap. Any ideas? I'm totally lost. I really don't care what brand as long as it's reliable and fairly comfortable. Thanks guys, let me know if I should be more specific, or if you need any more info.