"The MT's are great in the woods of the Northwest but the ATs are just as capable in all but the stickiest and/or deep mud. I generally avoid it anyway."
(added point, In rainy conditions on the trail, which are more common for me. It's been BFG MT's, Like you said It matters when and how "he" wants traction..
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The ATs win in the snow and the rain.
(rain, except when it turns to mud on the trail. usually it's that way. Just another thing to add. Rain on the street..Right on target x3. and snow no matter where it is..)
The MTs are good on rock, the ATs are great.
(With this added note Imho,MTr's are better on the rocks.. which he's not considering and off topic)
MTs are noisier on the highway with some transmitted vibration, the ATs are very comfortable and quiet. Both are generally easy to balance and I now use AirSoft BBs and have done that in both tires with real success.
(Swampers are happier with this balance x3, and last longer)
I can't comment on the Toyo other than to say every one I've ever handled was very heavy.
(True those cases on the M55's are stout and you'll find a lot of loggers in Tillamook use them for flat protection on the gravel roads and they get excellent mileage out of them.)
A lot of guys here in the NW swear by the Interco Trxus but I still categorize it as a high wear/lower mileage tire. While they provide all kinds of positive traction, 20,000 miles is not much when you get similar performance from something that will last 3 times as long for similar money.
(Not owning trxus tires but in the past wheelin' other swampers myself, and many others who I wheel with have them, Including my other half (Girlpower 4x4) google it... I would agree x2)