·Time Warner Cable
·Verizon Online DSL
Simultaneous talk & surf
It's great when it works on AT&T. However for non-3G phones (there are a fair umber of them) and in non-3G areas (remember, Verizon has 5x the 3G coverage of AT&T) you don't get that feature.
For what it's worth, I don't recall ever needing to surf the web while on a call, though I can see why some people would need t do it. Guess it's just the way I use my phone, though I'd figure that 99.9% of folks would be in my boat (more 3G coverage > talk = surf simultaneously on a phone).
Also, talk + surf does me no good on my data card. Though I can always do VoIP in that case...and Sprint does a better job with VoIP than AT&T last I checked.