the power output is almost the same. other than that they are identical sleds. 800s and 700s share the same crank and bearing design and they are both candidates to have issues but it's rare. i have an 01 800 and i like it a lot. basically i think it would come down to which one you can get cheaper. also if you want to mod it at all it's easier to find used pipes for the 800.
A forum community dedicated to snowmobile owners and enthusiasts. Come join the discussion about performance, racing, troubleshooting, trails, maintenance, riding tips, modifications, classifieds, gear, and more!