I really like the MS, not so fond of the MS2. Either of these are scary bad on slippery roads. Summer tires for sure. Smooth, quiet ride.
I also like the AT/2 but it is not as smooth a ride and wear is not quite as good. I ran the AT2's winter 12,13, and 14 on my 2012. I do some snow plowing and never added ballast. They are good solid tires for the first 15-20k but then they lose their siping and the grip goes away. By winter 14 they were worthless, but not as bad as the MS. I now have 55k on them. They don't do anything in the snow, but I can't throw them away as they have probably 15-20k left in them. Going to a dedicated wither tire this season Nokian LT2's.
Michelin rubber is great, BUT it is hard and not made for winter roads. Even their winter stuff is hard.