Might be a dumb question to ask on a kx site, but here it goes.....The wife finally gave me the ok to start racing. I have a 2000 kx500(original owner), that is all dialed in. About 6 months ago, I picked up a cr500af.....I have it set up for me now....I'm a little faster on the cr, but I'm more concerned with being able to fix anything that breaks rather than dealing with custom parts. I'll be racing the Big 6 GP series in D37. Been riding a dirt bike for 35yrs, but never raced. Just torn between which one to go with.