Whatever you get its worth the extra peace of mind. I've heard Blizzaks are very good. I've used General Artic Altimax Stud-able tires which were reasonably priced and made it through a blizzard on the way to Tremblant one year when everyone else was sliding into ditches off the road. I have same problem as you living in the NY Metro area. One day its freezing and two days later its 65. I bought separate rims for the snow tires and only put them on when it got cold. Warm weather tends to chew them up faster in my experience.