Bottom line. The KTM is going to out last anything else.They make a size and version(EXC,MXC,SX) for what your needs are. They come with all the good stuff (bars, chain, rims) etc. I have never replace a KTM clutch. I averaged 1 top end a year with the KTMS. Others including Honda,Yamahas, Suzukis, and even Kawasaki KDXs , at lease 2 top ends and more than likely a clutch or two every year , not to mention replacing all the junk controls and cables. The KTM will save you money in the long run. As far as the set up Talk to the right people, for the riding you do, you'll be fine. There are Cadillacs and ther are Chevys, you choose.