well dry weight polaris 731 pounds for the 500...the 550 is 732. the 800 is 784.
dry weight for can am 500 645...the 800 is only 663 and the 650 is 660 pounds...
it all depend on the rider...
im thinking about sellin my 07 can am 650xt.... but ya polaris have a good ride if you want a heavy quad... but i road them till i bought the can am...