I also have used both the Dunlops and Blizzaks on Mustangs which are also rear-wheel drive cars that aren't really great in Winter. Of the two, the Dunlops lasted a lot longer and had just as good traction as the Blizzaks. I was VERY disappointed in the Blizzaks longevity. Two seasons and they were shot!

With teh Crossfire, I went two winters with the Conti all-seasons - not great, but the winters were pretty mild. Last year I put Yokahama Advan S-4's and this is what happened to me the first time it snowed...



When I finally got home after 5 1/2 hours and getting towed the last couple miles, I immediately went online and bought 4 Pirrelli Sotozero tires - 18's all around with the different sizes as recomended by Tire Rack. I really like these tires. We only had a couple storms after that, but they dug right in and held well. They also have a better "performace" feel than the Blizzaks did - they always felt mushy to me.

I would never try to use the Yokahamas in snow again - they were the worst all-season tire I've ever had, but they are terrific in warm weather (although they are a bit noisey).

Here's the Pirellis with the wheels I bought to go with them...