Going to Montreal in a few weeks. Taking my unlocked Note 2. Very very light calling. I basically want to be able to text via Google Voice and let my gmail sync up. I'm thinking about maybe 100-150 mb max? Option 1: voice, just let it roam via AT&T. and put on the $30/120mb int'l data package Option 2: is there some good prepaid option out there I can get?