As someone who lived in Alaska for quite some time and made the drive from Montana to Alaska many, many times I can tell you, Canada is a very beautiful place. The Rockies, the lakes and rivers, and all that is our northern neighbor is something to behold.
That said, I can also tell you of many times where I did not wait for the gas tank to fill before I had to get out of the mosquito fog. Yep, they are that bad (or worse). Also, northern Alaska has black flies and I hear that Canada does as well. These things are just flat mean, taking a good chunk of flesh off of your hide.
So, if your going to live in the great white north, I am envious of you. I do miss living in Alaska something awful. Just be sure to wear a full face visor on your helmet and plenty of mosquito spray (100% DEET -- accept no substitute).