I want to add a little caveat here...
For WESTERN wheeling, it seems that the MTRs are the way to go.
Don't even think of them for EASTERN wheeling though... Unless you really like winching your truck out of the woods time after time.
They plug up within 10 feet of entering a trail and never unpack again, no matter what. Totally suck for Eastern clay.
Here, the IROK, Swamper, Boggger, etc., are king. As an example, my youngest kiddo is running a mixed set of tires on his full-size Jeep Cherokee... MTRs up front, Pro Comp XTs out back. The back will dig and go -- the front looks like a pair of gumballs and he washes out on every corner.
So, consider where you're running the tires... for Moab-like rock, the MTRs are great... For clay or mud, leave them on the tow rig.