I thought you guys were crazy, but I drove home in the snow yesterday on the stock 17" Contis. They were awful. I'm now seriously looking at getting a set of 15" snow tires and wheels. I can't afford it, but I can't afford to wreck this car the next time it snows either. They did a terrible job preparing the roads this time, and I was trying to merge on to a highway. The onramp was not treated, I basically did a 4 wheel drift on to the driving lane. Luckily the person behind me was nice enough to let me in.
Edit: I have the 5 speed, so luckily I have some more control.