You might want to look into Virgin for mobile data. They use the Sprint network and offer a truly amazing deal: no contract mobile phone service starts at $25.00 a month for 300 anytime minutes, or $40 for 1200 minutes, plus unlimited 3G data tethering to your phone as a modem. It's a prepaid plan, but if you maintain continuity from month to the next, they roll over any unused mintues. My girlfriend, who is a geek to the 10th power, researched it and absolutely loves it. She's got me convinced, and I'll be switching as soon as I can afford to purchase a new phone--and the Virgin phones are quite affordable.
I own my own Verizon USB, and I'll still definitely still use it during storm chasing season for the coverage, but otherwise, I'll be going with Virgin prepaid in the near future.
On other fronts: GR with the Allisonhouse feed gets my vote. I also love F5 Data. It's a fantastic forecasting tool, and via Allisonhouse, you can customize up to 6 F5 mesoanlysis profiles and display them on GR to see what kind of environment storms are moving into and out of.