Always Learning

I am awaiting delivery of a new Legacy 3.6R. It will be my first Subaru and my first AWD vehicle. I live in Northern NJ and get a few inches of snow maybe 10 times each year. Lots of rain and temperatures below freezing all winter. Are the stock tires any good for winter driving or should I buy winter tires and a second set of wheels? Which brand (Blizzaks?) of winter tires do you recommend?