Unless you're going to be driving on snow-blanketed roads 100% of the time, you don't really need studded tires. You'll probably be fine with studless winter tires like the Bridgestone Blizzaks or something similar. Performance winter tires would be the way to go if you were going to be driving on cold/dry roads more often than snowy/slushy roads, although they do perform great in snow too compared to all season or *gulp* summer tires.
07 WRX (Albins 5MT + Blouch 20G)
Jorge Carrillo Tuned (365 whp/340 wtq)