hey guys been riding mtbs for a while but want to get into some BMX park and dirt jumps. Just wondering what bike I should buy? I think I want a 21" and I think I want 100% chromoly. found the Stolen Sinner and the Cult CC01 both seem to be close to budget and look like solid bikes too. Don't really want to spend any more than 400 - 500 and I found both of these in that price range. Any other suggestions or advice welcome.