The key diffs are: New version has improved front brake and front forks, much needed. Old version is more crashable cause new one has a real upper fairing that shrouds around the tank, making it more fragile looking and prolly more pricey to fix. New swingarm and shock supposed to work better, but that wasn't as important as the front end improvements, nor as noticeable. Some same new seat not as comfy as old (very subjective, that one). Better throttle response and a bit more power, but you can get the same out of an older one, the lump is the same. If it were my money and I was jonesing for one, I'd buy a late 90's one for $2500, drop a k or so to upgrade the little stuff like front brake, new fork springs and a brace, pipe and a jet kit. Both bikes need real barkbusters, crashbars, and bash plates for offroading, so that's equal on either. Then dump remaining difference in price into the gas tank and ride the shit out of it. Good fun.