Hi folks. As well as the Winterforce tires I talked about a bit down the list, I have 2 more choices. Cooper Weathermaster ST2, or Dunlop Graspic DS2. They're both about the same price, both easily available, but which is the better tire? Driving is mostly city, a few inches of snow at times, slush, and some ice. What do you think? Which is better? Thanks.