I've got the MudLite XL's and they are OK for a trail tire. I'm not super impressed with their mud capabilities, but they do OK (OK in the snow too i guess). I hear the XTR's and Zilla's are about the two best Mud/trail tires out there and the Zilla's are really light. Bighorns would be good for anything else but I have heard like others, that they don't clean the best. Mudbugs, 589's, Outlaw MST's, swampwitch, swampLites, are some other good tires as well.
07 Brute Force 750
12 Teryx 4