Learning to Fly in Montreal
Back to the OP. I fly into Montreal as a GA pilot several times a year. I also grew up there.
As a practical matter the language issue is a non issue. You will figure out all the French you need to know, and it is not a lot, pretty quickly. Despite all the Canadian angst and BS I am not aware of a single incident in Canada where language was a factor in an aviation incident. If there was one several on here would have let you know by now.
If I had to chose for the locale it would be Montreal or Vancouver, I'd skip the rest though Harvs Air is MB seems to get good ratings for the program.
The real issue is what flight school. It is a lot of money and buyer beware, really beware. In all honestly you are going to be so busy that Sudbury might look good after a while.
I would focus on what school offers the best package. Do your research and dig deep. I would visit each one in person. Pay a few bucks, save a lot of bucks.
20driver