I just moved to a place that is within a mile of a bike park. I went over to check it out, and am really psyched to ride some. I don't think the trials bike would hold up and was thinking of picking up a BMX anyway. Could anyone suggest some complete bikes I should look at (full chromo frame)? Is there that much of a difference between street/park/dirt frames? I'm 6 ft so I figure I should go for at least a 20.5" top tube. Also, If anyone is looking to get rid of one let me know.