If you haven't own snow tires before, you really are missing out big time. I am serious about this.
However, if snow tires are not an option for you, since there is a hassle of swapping them out. Then I'd recommend you to buy Nokian WRG2 All Weather tires... this is snow tire designed for all season...
The difference is all season tires are designed from summer tire... not from winter tires.