I have an '09 Switch 800, love the chassis, concerned about the motor and the reliability issues, I haven't had a problem yet. Sled performed well stock, I re-geared slightly and dropped 70 g weights in it, made a substantial difference, pulls much harder now, also had it reflashed twice. 600 only a couple miles per hour slower?, don't think so, I lined up with my brother, he has a 600 liberty and it wasn't even a race, destroyed him badly. I think once Polaris gets the new 800 dialed in it will be a force to be reckoned with, sad they can't get it right the first time.