Mexico and SIMple Calling [single US number SIM only]

[rfranzq]

Originally Posted by adam917

Maybe you might want to look into getting an AT&T GoPhone SIM. I believe voice in Mexico is only 0.25 $/minute.

Excellent point, however, part of my choice involves using SIMs I already have and trying to lower their balances. I don't have any at&t balance and I do have $40+ on T-Mobile and more on various ekits. Don't travel enough to let the balances get too high or risk losing them through lack of use.
thanks