Where I'm at, Verizon doesn't even come close to AT&T in terms of coverage and speed. I've tried them many times, and always get calls that are either garbled or drop. With AT&T in the same location, my calls are clear and never drop. I haven't had one network related issue with AT&T using my iPhone 4, which is jailbroken. I use a data connection from my iPhone 4 to my iPad via an app called "MyWi", that I downloaded from Cydia. It works great on my iPad while I'm away from a WiFi area...... When deciding on which carrier to go with for data on your iPad, it is always better to test their coverage out for yourself, as everyone's coverage will vary based on their location. Also, being able to connect to your cellphones data plan, will save you money, instead of relying on the carriers iPad data rate plans.
