while I've only ridden a 220 one time in the past I wouldn't call it a 4 stroker.At the time I was riding a piped 200 and couldn't tell the difference in the low end between the two.The 200 does rev higher and faster in my opinion.If you are going to race it the 20+ cc's will put you in the 259 class (enduro/HS races)I just bought a KDX again a few weeks ago after not riding bikes in a few years, I really didn't consider the 220 one my kdx short list, not that there anything wrong with it. The 02 that is spotless may be a better deal, one that has wear on it will need parts replacement quicker, money that I'm sure you'll want to put toward upgrades. The 01 bike I just bought that was very clean still will need sprockets,chain and a few smaller things this winter to get it up to my standards. Good luck with the bike purchace, you won't be making a mistake with whichever bike you buy.