I used the Motorola Q for about a year and a half and I have to say that it's great. You can customize just about anything and there is a bunch of third party software available for purchase or download.
The terrible battery life is worth mentioning though and you might want to look into an extended battery for the phone. Don't leave the charger in overnight and try not to overheat the battery by keeping it out in the sun or something.
I moved on to a standard flip phone because it appealed to me at the time but I do miss the easy e-mailing and full keyboard.