I live in Montreal Canada. Our winters are harsh to say the least. I used to commute 45 miles per day, half the year in snow/icy winter. I've purchased 5 sets for the following cars: civic, volvo s60, hyundai santa fe, BMW 328xi and my infiniti G37x.
My driving style is very aggressive starts but not at top speeds because I've gotten my fair share of tickets. These suit my needs pretty well because I don't expect to drive faster than the 160km/h (100mph) it is rated for in the winter. Other cars clearly don't have tire because if they did, they wouldn't stay stuck in the snow or at the light as I ease past them.