I've had the Motorola Droid for a couple months, and I'm 92.6% happy with it.  Signal is great,  internet and features are the best.  The battery is a little short-lived, and the telephone sound quality is poor.  People complain I'm talking into a metal can, and it sounds to me like they're on a satellite phone in a radio news report.   But I wouldn't trade this Droid for another phone now,  it's still a good balance of features and quality.  I just wish the sound were better. 
Charles