My little bro handles his 660 great, but it is way too much for me. Too hard to keep the front down and it will go around with you waaay faster than what I like. But to each his own. I guess if my 350 ever gets boring, I'll be getting one, but I don't see that happening. Few trails around here could I get a 660 into 3rd gear. And none where I could get it strung out in 3rd. They are great though for someone who has the skill to ride them. I'd like to try the 700 because I think it will feel more like the 350 since they have widened it and lowered the seat a little.