I had an 11 850 xp . it was only state trail ridden , and in the woods trails . the #1 thing to look for is the oil in the airbox issue , that was a bad breather on top of the eng doing that . a few guys lost the motors , but I think they drowned them in swamps and tried to get warranty . I also wore out all my a arm bushings in less then 500 miles . the engine is a POWERHOUSE !!! a blast to ride , but I did not want to keep replacing a arm bushings every year . the polarass warranty would not cover it either . do a search on the sportsman 850 xp problems or go to the polaris atv website and read all about thier issues . the "value line " sportsmans are much better built , I have had multiple sportsmans over the years and the 850 xp was the only bad one . maybe look into a sportsman 800 ?