Since your company will give you a Curve with either one of the top wireless providers, it is wise to base your decision on which carrier will provide you with the "best" coverage in the areas that you will be using the device in the most......... I have used the Curve 8330 for Verizon, and am now using the Red 8310 Curve for AT&T. While both devices were similar as far as their features are concerned, the 8330 was a lot slower for web browsing than the 8310 that I'm using now, due to the lack of EVDO support in and around my house.............. The best advice here would be to use both carriers 30 day trial periods and see which one works best for you. Talking to family, or friends that use either one of these two carriers will give you some indication of their coverage in your area as well...... Good luck.