i wana jump upp alot of things cause its fun but i wont be doing trails maybe jumping off tree stumps ect with my friends.So i think rockhopper is the best choice thats around 500.Now im wondering why in the specialized site in the features it says A1 frame and the tech specs it says m4 frame and the bike shop it says A1 omg im so confused.Would a hard rock comp disc be better than a rockhopper base?Also i looked at the bikes you but the components are not as good as the rockhopper