Comparing 3G Networks
bsk_cw writes "Brian Nadel got hold of cellular network cards from AT&T, Sprint, and Verizon, and tried them out with a Lenovo ThinkPad X300 notebook. He watched videos on commuter trains, worked with e-mail at cafes, listened to Internet radio at the airport, and downloaded large files while in a moving car. AT&T came out on top in his tests in the New York area (summary here). Some of the reader comments report different conclusions, so a YMMV is in order."
I tried my 3G iPhone with both AT&T, verizon, and T-Mobile. AT&T had better speed and coverage (Chicago area).