Hi,

I have used noblecom.com for a while to call Mexico. I especially like their OneSecond calling card, which has no maintenance fee and one second increments.

I have had a very good experience with this card, with talking time in the vicinity of 5 hours for a 20 dollar card. However, I do realize that while I call very often, most of my calls are very short. If you plan to only call a few times but for a long time, then you might be able to select a better card either at noblecom or other company.

Good luck!

PS. If you are calling Mexico City, beware of the city code. The city code changed a few years back from 5 to 55, and local numbers also gained an extra 5. Local numbers are now 8 digits long, and 10 digits long with the city code added to them. That said, in some rare cases you might find numbers that are 8 digits long already with the city code and often calling 011+52+55+5xxx-xxxx will result in you reaching a different person than calling 011+52+5xxx-xxxx.