Best long term international cell plan?

I use Cricket wireless (an AT&T company). My plan is $65 mo. with auto-pay and is unlimited calling in and between US, Mexico and Canada. It includes unlimited data. There are no usage limits in when in Mexico or Canada.

Thank you very much for the reply!. I used to live in Texas and I am familiar with Cricket. My question is, how is your signal? Is it reliable? Do you live in an urban area or do you live in a rural area?

I have a Verizon 3-country account. Allows you to communicate between Mexico, US, Canada. $85. Per month. ~ Cielo

I live between Rosarito and Ensenada in Baja. Since AT&T is now operating in Mexico the signal is good generally pretty good in our area. When roaming I'm often connected through Movistar. I have not been in many places that I've not had a signal.

Consider porting your U.S. number to Google Voice.  You'll only be able to make and receive calls from your computer, but it's only $20 USD to port the number and then free to use.