Hey guys. I havent rode a quad in a few years i was starting a family and didnt have time to do so. any ways i used to ride a 300ex and a crf125,Im looking to to buy another bike ive been shopping around I was looking at a 400 ex because they are bullet proof quads but the 450's sound bad ass and everybody has one but on the other hand people have been telling me they are a pain because they are high maintaince and that you have to ajust valves every few hours and so on...Should i just stick with a 400? or go with a 450? all i do is trail ride and i have a quad pit bihind the house will some hills and jumps...and im a big wheelie rider