Okay this is really late for a response, but I own a 400 4x4 Cat. I'm totally satisfied with it, love the higher ground clearance and the larger rack capacity. Put one deer on the front rack and one on the back rack and still went up a 20% grade with no problem (and I'm not a little guy). Only have to put it in 4wd when I'm trying to pull out of a muddy creek bed uphill. Best price and best warranty at no extra charge. If it was liquid cooled it would be quieter, but it's not very loud to begin with. It does rev up higher than a polaris (cause it makes its horsepower at a higher rpm due to the Suzuki motor/tranny combo). But it's smooth and been trouble free so far, that's only 6 months but it's been through rain, snow and 25-100 degree temps so far.
Bill
