im lookin for a machine that is 4x4, true 4x4 that is. im lookin at the kodiak 450 b/c i currently own a 02kodiak400, and i like the reliablilty and manueverablilty. im not sure how big of a power diff there is between the 450 and 400? the next machine im lookin at is the scrambler 500. im not sure how reliable they are though, and how good will they be in the tougher terrain? im 6'1", and weigh about 150,16yrs old. send some tips