well heres my situation i bought myself a mongoose article for the bmx park . its heavy very unstable and agile doing jumps and cheap. now i heard dirt bmxs have longer frames for big dirt jumps thus making them more stable doing jumps is this true if so id be looking for a dirt jump bmx for the bmx park but wouldnt know what to get. im currently looking at a specialised p20 http://www.specialized.com/gb/gb/bc/...FPark%2FStreet but i know that theres better out there so what do you reccomend i get? it has to be a dirt bmx.