My vote is for Swalbe Winter Marathon tires. I like them because the (newer) models have the tungsten carbide studs, and the reflective sidewalls are hard to miss. Also, where i live in Toronto, Ontario the roads seem to be madly salted most of the time anyway so i wont be missing the aggressive knobs found on the Nokian tires. With so little snow (generally) hanging around on the roads, the Swalbe Winter Marathon tires will do you nicely for the lower rolling resistance and the studs will come in handy when you run into the patchy black ice here and there.

Swalbe = shoveled and salted roads + patchy black ice --> lower rolling resistance,
Nokian = unshoveled and unsalted roads + patchy black ice --> higher rolling resistance , cost more