I purchased a Skyroam unit for about $100 and it came with 5 free day passes which each pass once you start it last 24 hours. Extra day passes are $8 per day.

I just recently used it in Cabo and it worked pretty good, sometimes tough inside our hotel room but if I put it near the patio it worked better. I could walk around town and be connected and when we drove to Todos Santos it worked almost the entire trip which allowed us to use google maps for the best route (north Cabo to find the main road is a lot easier with mapping, as is the way back through there).

I got it with the idea that I am going to India in October and then possibly will use on SXM in November. It states that it works in both.

The best you get is 3g, but that worked fine and you can have up to 4 devices connected at the same time. I am pretty happy with it so far.

Cheers,
T