With all of the concern about wireless services for upcoming Springboard modules, here's a product that could bring prices down: Motorola's Talkabout T900. It costs $200, but the monthly service is only $15/mo. There are four different colors, so you can almost match it to the color of your Visor!
Click here for a SJ Mercury story about the T900. Looks like Hawkins may be right about wireless services being free in the future.