I just upgraded my original Moto Droid for the Bionic 2 weeks ago. I had debated heavily weather to go for iPhone 4s or Bionic, but decided to stick with Android and go with the Bionic. Now I regret that decision.
Like others, I have horrible data connectivity issues with this phone. I like the phone itself, and when connected it's fast, but it completely defeats the purpose of having 4G when you get no data whatsoever and have to toggle things to try to get it to work. The worst experience with it was definitely on the 28th, when I understand there was an outage, but I've had the issue at other times too. I've found myself using the phone in CDMA Only mode most of the time (I only get 1 bar of 4G at my house anyway), and that does improve my data connection, but I have still had the no data issue at times. It is very frustrating.
I am still within my return period and seriously considering returning the Bionic and getting iPhone 4s instead. Would you?