Difference between Montreal and Quebec City?

It depends on how old you are too, if you are over the age of 30, you may enjoy Quebec City. Its more catered to the historical sites. If you are under the age of 30, Montreal would be more enjoyable. The Downtown is larger and gives you both perspectives of "old" and "new". You will also enjoy the fact that Montreal is more english. You also have a better transit system in montreal, making it easier to see more things.