Since purchasing these Pirelli's (09/25/12) I've been able to test them on dry,wet,snow and ice which is common for Alberta this time of year. I can say that they are the best winter tires I have driven on! I was able to navigate thru snow and slush as deep as 5 in with ease! Braking, cornering and handling on ice, deep snow and packed snow is excellent!
I would compare the ride and noise to an all season. Even though I've read other reviews in regards to noise level, I have to say that noise isn't a problem which may be due to the noise damping properties of the Infiniti.
Overall, I am very satisfied with the Sottozero's and they're cheaper than the higher rated competition!