Ive been riding bmx for the past 6 years and I don't plan on quitting anytime soon. I plan on getting a mountain bike, through the shop I work at and another hook up I've narrowed my list down to a kona cowen, cannondale chase 1, rocky mountain flow, or one of the new haro zero eights. These are the only companies I will buy from since they are the only ones I can get a deal on, there is no way I can afford full price and this is going to be a secondary bike to the 20". I plan on using it for dirt jumping, a little urban stuff, and possible some 4x. Let me know what you guys think of these and which one would be the best buy. p.s. any complaints about e-13 chain guides?