Definitely a personal preference question...I hunt just north of you in Manitoba and I'm sure that our temperature patterns are quite similar. I've never had a difficulty with Bushnell or Nikon in the cold weather. I would go for a 3x9x40mm scope which ever you buy. The better the lense you buy the better the light intake will be in low light conditions. If you have the bucks a Zeiss conquest is an excellent scope. What is your price range?