I can say honestly that the Sportsman X2 is probably your best bet. There aren't any other quads out there, that I know of, that have a 400lb. weight capacity in the rear. I've had my 340lbs. and a riders 200lbs. on it and still can ride level. I did get heavy duty springs for the front and now the ride is perfect. Polaris makes it in 500, 700, and a Limited Edition 800.