Nina,
Admittedly, the OtterBoxes for the Original iPhone and 3G were pretty bulky, but the one for the 4 is actually pretty decent; It doesn't have the same uber-clunky feel that the previous ones had.
In any case, I'm totally pleased with the 4, case or not!
CE,
Yup, and I do have to wonder how many people will churn from AT&T in favor of Verizon and discovering to their horror that they'll have to purchase a completely new handset... Most of the wireless-using public has no idea that each wireless provider uses a different cellular technology, and not all of them are compatible with others handsets. Verizon is a CDMA-based cellular technology, wheras AT&T (and thusly the iPhone) is based off of the GSM standard, which is incompatible with CDMA. Ironically enough, GSM is the international standard for Cellular Communication, so it's funny as hell that the majority of the US Cellular Providers are still holding out...