The good thing about Mickey Thompson tires, used to be they generally had a higher speed rating than other tires. I don't really know if that has changed or not.
if your not planning on running at triple digit speeds, it's probably irrelevant. They may now make Mickey Thompson tires in normal speed ratings. I used to like there wrap around tread design. I do a lot of mud and every little bit of tread helps (though the design did seem to be a little more cosmetic than functional).
A lot of guys around here ran Mickey Thompsons (no speed limits on the autobahn) I've never heard anything bad about them, here.
There is now a whole selection of speed rated, AT's and MT's available, Mickey Thompson was in a class of it's own for awhile.