Do you have to use a 205/55R16? The traditional thinking is thinner is better. Since you have an 07, as long as you haven't drastically modified the brakes, you should be able to use 15-inch steel rims and go 195/60R15.
Nokian Hakkapeliittas are great. I've ran the WR and the RSi.
This year, I'm giving Gislaved Nord Frost 5 a shot.
Ultimately, it depends on your budget and driving. If you got a lot of icy conditions, you may consider more of an ice tire (like a Bridgestone Blizzak or Micheline X-Ice 2). If you drive a lot of highway, you may need to filter out choices based on speed ratings (some are as low as Q, and some are as high as H). If you have been happy with the Winterforce and haven't changed your driving much, there's no reason why you shouldn't have to change brands. I mean, at least you're running winter tires
