Hatfield, Thanks for the details. I do have an unlocked device. I will look into telestial to check for possible SIM card options.
My immediate need is for Canada, and in Europe it will be UK/France/Germany. During my last trip I tried a Fi device, it worked great for calls/text but not as much for tethered data.
I am with AT&T, so am a bit hesitant to jump the T-mobile wagon. Unless there is a benevolent Pigg who will adopt me for a TMO additional line subscriber 🙂
Planning to visit the stores this week to check if there are any cheap alternatives.