Following: I would be nice to hear about the Canadian Pay-As-You-Go plans. Having data access is more important than calling for us.
It's not hard (or at least it shouldn't be) to swap out SIM cards. When we land in a new country, it's usually 15-20min at a kiosk and they put the SIM in and get it operational before we leave the airport...and it's usually dirt cheap in most other countries. Coming back to the USA, it's a huge hassle, hopefully Canada hasn't taken the USA lead of making it difficult.
Key point: Differentiate data limits from Hot Spot data limits.