I use Verizon's EVDO and am not very satisfied. I uses two mac laptops (ppc and x86) and suddenly started seeing a ton of kernel panics, where I had got years without trouble. The connection client is really lame. Also lame is the 5GB limit for the "unlimited plan". At least now they will not disconnect you if you hit 5GB in one month. They will "just" limit your througput. I'm out in NH and the service is come and go as with the verizon voice coverage. In San Fran, the coverage and usage was excellent. I used it on trains going through tunnels without trouble. It's annoying to have this adapter hanging off the side of the laptop all the time. Also, once in a while the network flays on "re-registering" and it locks me out of the system for 3-6 hours while the network thinks that I am trying to connect from two machines at the same time. They say that it is only for standard web browsing only. I haven't tried skype, but ssh, irc, and all http(s) all work fine. This sumer, I will also be getting a DSL or Cable link, cause I can't take this much longer as my only connection. Sometimes at my house, I get 3 "bars" and other times I go hours with none. I wish this client would log signal strength so I could see if there is some pattern to the outages. Tech support has been responsive, nice, and more friendly than most. Still, it is easy to run past their knowledge of how the network works. Over all rating: so-so