What are your preferences? The Canned Ham is fast, reliable, and smooth riding. If you're a mudder, you need snorkels and a clutch kit. The frame is reputed to be weak.....but most people install a skid-plate and then it's not really an issue. I love my 07 800 and bought an 08 400 for the wife.
yah the can ams are hard to beat, most sled guys that live and die polaris sleds dont drive polaris quads. The kawasaki brute force is a good one too, been around for a while so you could find some nice used ones
I would not purchase a used BF as IMO most have been ridden hard, and considering 3 friends of mine that have had experience with their BF they always overheat, 2 sold and bought Can Am's.