On the Bionic for almost a week now and I have had 0 issues. Media works great for me, bluetooth while I am jogging and mowing and plugged in while in the car, I have had nothing but excellent play back. I noticed the screen at first, but I have gotten use to it and it is not bad at all. I really enjoy the brightness of the screen while even on the minimum setting. I don't have 4G yet, told by the end of November. However I have noticed that I am getting 2x to 3x more speed up and down than I was getting on my X. Battery life with the setting locked on 3G is a little better than the X, but the battery is also a little bigger. The dual processor just makes the phone fly. Another plus I have noticed it the GPS, before I would not get a lock in my office at work and now, within seconds I have a lock in my office. Also I took some video this weekend in 1060p and it is amazing. Also being able to plug in an HDMI cable and watch netflix on the TV and see it on the phone is great.
Overall this is a nice upgrade from the X. I really like the motorola phones as IMO they are the best built phones. I know they are locked down, but they are still the best money can buy. The way I am looking at this now is I have started the clock towards my next great phone when it comes out down the road.
I would not say the Bionic is a bad phone and is actually a nice upgrade over the X.