I was in the same dilemma a couple of the guys I ride with bought 1000 Can-Am outies but I have had Yamaha's for years and know they are reliable I have a Raptor 700 and a Wr 450 dirt bike so I decided to go with the new Grizz it has some minor improvements over the older ones. ( would be nice to see a V twin Yamaha ) Not to say a Can-Am isn't reliable But I know Yamaha's are and I have owned a couple of Polaris Scrambler's 400 & 500 and was always wrenching on them. I have no problem keeping up with the Can-Am's on the trails on a road they leave me in the dust but I'm OK with that I'm getting old anyway. We will all have these quads for a while and we will see who does more wrenching vs ridding time will tell. But like others are saying if you want the biggest fastest go with the Can-Am.