I bought a 1997 KDX220 about 6 months ago for 1100.00. It is in great shape and I love the bike.I put an fmf pipe and a larger carb on it and also got the appropriate springs front and rear for my (hefty) weight. I bought a KDX figuring it was the best bike for my price range and riding needs.Plus the reputation they have for being bulletproof and low maintainence was a factor , as I don't have lots of money to keep it on the razors edge. I only recently returned to dirtbike riding,and pictured myself doing a little motocross and a little trailriding.Truth is I am doing no trailriding and really love hitting the track again after all these years.Im wondering if a strictly motocross bike might be the way to go. I'm 47 years old,way out of shape(working on it),but still mostly remember how to get around a track pretty well. Will a CR,YZ,KX,RM, beat me up more or less than my KDX? Would a 97-02ish 250 be that much more powerful and better suspended than my KDX? I'm just looking for some input and advice. Which of the four bikes will best suit my aforementioned needs? Opinions,please. Oh yeah,one more thing......please keep this on the down low(aren't I hip?),as the "KDX only" site depends on my wit and humor to keep the site going.If they found out I'm considering this act of unfaithfulness and disloyalty,they would probably fold immediately. I can't have that on my conscience. Thanks!