So i am looking for some advice on these three quads, looking to buy the best one

1. 2006 Artic Cat 500 4x4 279 mi. $2850
2. 2004 Polaris 600 4x4 95 hours $3000
3. 2002 Yamaha Grizzly 660 102 hours $2500?

I am just looking for the very best all around bike, at these prices the $$ is really not the issue, thanks in advance