Im interested in an atv witch i will not be buying new. had a 350 wolverine but i felt it was under powered. the 450 looks nice but i noticed it doesnt have a differential lock and i hate the limited slip. so i thought the scrambler would be nice. my trails have some rocks and fields so i want something for both. approx how much snow will the scrambler go through? mud? hoe is it on a field do they have aany common problems?