I'm with Eddie. $500 max for those. At $600, that's just fifty bucks each removed from a new tire with a warranty.
I've had A/S (All Season - factory originals) and M/S (Mud 'n' Snow) on mine. I got virtually identical wear on both. They are, as Eddie said, more or less the same tire, with minor differences in tread design and in composition. The A/S will give you slightly better wear because they are harder, but they are not as pliable in cold weather to deal with the snow. The M/S is a little softer for better traction in snow and mud. For expediting I'd say it's a coin toss.
My current and previous set is the A/T2 (All Terrain), which starts off with deeper tread to begin with, is stiffer at warmer temps to give longer tread wear, softer in colder temps to deal with snow, and has a more aggressive tread design. Some people say they are louder, more noisy, but I didn't notice. The A/T2 and the M/S will each give the same tread wear, more or less. The A/T2 is slightly better at braking because of the tread design, but the M/S is supposed to be a smoother ride.
The A/T2s, being All Terrain, will give 35% better tread wear on gravel, which is an important test for off-road durability. I fully appreciate that whenever I deliver to a remote gold mine in Nevada, but also at most automotive plants, some of which, frankly, with their cracked and sometimes missing concrete slabs, are worse than Nevada's off-road gravel roads. Of course, with my new carrier, the chances of delivering to a remote Nevada gold mine is, well, remote.
