alright, lookin for a sled for this winter and narrowed it down between two sleds, 99-01 polaris xc 600-700's or a 98-99 ski doo form/mxz 670. I've always been a polaris guy and was thinking about switching it up a bit. they both have about the same horespower numbers. Im just a trail rider but like to go off trails once in a while, i also like speed. mostly looking for a reliable sled, ive heard good and bad about the 670's. Ive done some research, just need some help with my finial decision. let me know what you guys think..