the tripletred depending on the size comes with a 60k treadwear warranty.. the silent armor only comes with a 50k treadwear warranty, however if you dont keep up on your alignments/rotations you will wear the tripletreds unevenly

the silent armor is better for offroad with its high voids, and the kevlar re-enforced tread blocks, its also got a layer of noise reducers under the tread to keep it quieter on the road

the tripletred will give you the best road handling you can get regardless of the weather, it too has the severe weather snowflake/mountain symbol, however it gets you the traction via a very unique tread pattern, so it will not do very well offroad.. the other thing to think about with the tripletred is that it is rotational (you can only use it in one direction) so if you have a full sized spare, it will only work on half the vehicle

the michelin LTX I dont have much experience with, but in general i agree with what riff raff said.. they are usually over priced and every michelin ive seen for SUVs has a sidewall thats very soft

ive heard nothing but good things about the AT Revos and AT Revo2 but have not driven on them myself