Hey Coolhandnts, I highly recommend the 500efi. Starts up in 3 chugs even in the coldest weather. Smooth acceleration and plenty of power. I pulled a 5000 lb. wood chipper up a wet grassy hill in 4wd low and it got it to the road without an issue, first try. (Note: the lawyers at Polaris do not recommend doing this at home) My friends pickup with BFGoodrich All Terrains couldn't get enough traction. I've also been through some water/mudholes up to my headlights and got through every time.