So I signed up for Sprint's EVDO service on my phone and it was a pretty good deal in the end.
I had been subscribed to their Vision data plan for getting e-mail and sending pics and stuff, and that was costing me $15, plus $5 more for unlimited texts (I use about 300-400 a month).
They don't have an EVDO phone service that works with unlimited texts, but the EVDO is actually a Vision plan, so upgrading to the $39 service meant that I could knock off the $15, and now its costing me $10 for 1000 texts a month, just to be safe. So, in total, for an extra $34 a month I now have mobile broadband internet...
...but that's not really the cool part, because the real savings is that, by plugging my phone into my computer via USB, I can use the phone as a modem and get broadband on my laptop. For $34 a month, that's TOTALLY worth it, as far as I'm concerned.
I'll keep you posted on the coverage and how it works...