The Droid 3 really looks like a killer phone. I have not used it or read any reviews but the keyboard and the phone just look solid all the way around. I currently use a Charge which has been great. Good call quality, no dropped calls, reliable data connection. After the latest update the gps has been working very well.
Before I got the Charge I did use a Thunderbolt and I would not recommend it. The phone is built poorly. The power buttons cave in, kickstands not placed properly and the amount of light leakage at the bottom of the screen is horrible. My first one got dust under the screen, second one was dead out of the box with a bad speaker, third one had a caved in power button and misplaced kickstand. The battery life was also horrible.
I don't know a whole lot about the Revolution but I would stay away from it due to being binged out. I know the Fascinate took forever to get updates and it really could have been a number of things but I think bing was a big factor in that.