I picked up the Droid Bionic on launch day and I have to say I've been absolutely floored by the quality of this phone.
The battery life is about what you'd expect from a high-end 4G phone. You can drain it pretty fast if you're streaming netflix on it, or using the data connection a lot.
But the speed? Oh man the speed. We live in an area with 4G coverage and the speed is just incredible. I have gotten 25Mbps down on speed tests, and my minimum has been 10.
The dual core makes everything load and run super-fast. Web pages work flawlessly, even with fancy graphics and flash animations with ads everywhere.
I plan on getting the multimedia dock with the remote and bluetooth keyboard/mouse so I can use it as a home theater PC when I feel like it.
All in all, the Bionic lives up to my expectations and exceeds most of them. If you're thinking about it, do it. I personally think it's amazing.