Blizzaks have a couple of different types of snow tires iirc, the lm series and the ws series. The WS are the best snow and ice tire, but give up a bit on dry roads. The LMs are Blizzaks "performance" snow tire and are good on dry roads and give up a bit of snow ice grip to the WS series.
http://www.tirerack.com/tires/bridge...tone-tires.jsp