Wow, these tires rock. I have gone through a bunch of different tires on my car (Kumho Ecsta 4x, Bridgestone Potenza S-04 Pole Position, Continental ExtremeContact and Bridgestone Turanza Serenity Plus to name a few). Since I drive aggressively, I don't get to many miles from my tires.
I live in the northeast and have already experienced 4+ inches of snow with these tires along with icy/slushy hail, and high 70 degree weather (imagine that in DC area in Winter!). These tires are ultra-quite, have great predictability in steering, and awesome performance in snow/ice/dry weather. Even though there more expensive than other tires, I will be making sure to place these on our other cars when those tires wear out (Mustang and Infiniti FX45).
Hopefully Pirelli doesnt stop selling these tires.