All the machines have had breakdowns now and then, The hondas have a ground clearence advantage which helps in the mud, however the open front diff causes them some grief sometimes. My yamaha is the least reliable, but is also the oldest and most beat up. The polaris is the only 5 speed polaris that I have ever seen, and it has a clear horsepower advantage, but the longest wheelbase and least ground clearance, which often leaves him stuck. The Hondas are the deep water champs, as their frontends are so light that they pop right up and float, where the big bear and polaris sink like a stone. The Yamaha usualy is the first one through a realy bad area, mostly because I have only 1200 bucks in it and could care less about it. I am considering a newer machine, like a Grizzly 700 or a brute force 750, but these are all belt drive, and I am concerned with the belt getting wet, anyone have any advice on this.