Jaykers, I have owned several Yamahas. My forst quad was an old Moto4. I loved it, and had no problems at all. I have owned 2 Big bears. One of them is 15 years old and I still use it around the farm. I have welded the frame on it , but the motor just keeps truckin. I now own a 600 Sportsman, which I also like very much. The Sportsman for sure wins out on the power and ride, but for reliablity, I cant down the yamaha one bit. Just my oppinion though.