So I've owned the Bionic for about a week now and I just want to share my current experience with it so far.
First off, I basically upgraded from the original Droid (and I do mean the ORIGINAL) so going from that to the Bionic is like night and day. I live in Omaha where the 4G just came around about a month or so ago.
The phone itself reminds me of the X2, with exception with the back where the protrusion is not as sharp. The screen is nice and large and relatively vivid. I've read some reviews saying that the display is not as good as some of the other phones out right now, but coming from the old Droid, it reminds me of when I first made the step from SD to HD with my television. Also, speaking of television, it may be such a small thing, but one of the coolest things to me is when you put the phone to sleep, it's like turning off one of those old tube TV's. As I said, it may be a small thing, but it puts a smile on my face every time.
Holding the phone feels comfortable and even after I put in the extended battery, the added weight and bulk really didn't make much of a difference as I thought it would. I did notice some audio issues. Even with max volume, audible key presses will vary from fairly soft to quite loud and the volume difference is inconsistent. Also, at certain points, there are audio distortions when a sudden change in volume (depending on what the sound is... noticeable while I was using Pandora) occurs. This is even when the phone is plugged into an external speaker. As for the calls, the audio from incoming calls were nice and clear, but there seems to be some sort of an echo when you speak to the other person on the other line. It is fairly unnoticeable unless you listen to it carefully. The 4G connection is currently hit or miss, but because it's relatively new here, I'm not going to be too picky about it. When in 4G, upstream and downloads are nice and fast. Even when in 3G, the phone seems to have a relatively fast connection, but is definitely slower on 4G. I was able to stream High Def videos with no buffering while in 4G.
Running apps on the phone is mostly a great experience. Apps load fast and react very quickly, thanks to the dual core processor, and having multiple apps running doesn't tax the phone much. There are the occasional force closes, but it's more from apps that have been around before the phone's inception. I did experience some slowdown or timeouts while going back and forth in the Android market and it took a little bit of time for the phone to reset itself.
The big negative I've experienced so far was when I transferred apps into the Media Area. I actually thought I messed something up transferring my old files from my old phone but came to find out there were other folks that had similar issues. It seems that it has something to do with when you plug the phone onto a PC from my observation. As I am typing this, some of the apps that I had in the Media Area disappeared again. To a lot of folks, this can be solved by just leaving the apps in the phone's internal storage, but for folks that has a lot of apps and such, it can fill up that space quickly, and not having the Media Area as a storage option is definitely an big issue, especially since that is what that was it was supposed to be intended for. I don't believe there is any sort of fix out there for this right now, which is kind of a let down in my opinion.
Overall, I love my Bionic and I'm super glad to own it, but the issue with the disappearing apps has me very concerned. I hope that this gets fixed very soon, or someone figures out what's causing it. This alone can turn a relatively positive experience with a very, very good phone into a negative one. I still have some more fiddling to do with this, but I really love the phone.
Now if you'll excuse me, I need to re-download those apps that went poof.