I have found this taxi service to be a good one. Drivers are prompt and nice. They are also willing to answer any questions they can about the area. I don't think you'll go wrong in using this service.
If they say they will be there in 30 minutes, you can bet AA United Cab will be. I have never gotten a busy signal when calling them, and I have found their rates to be reasonable. If I need them, I can call them and they will wait for me if I happen to not be waiting for them. They even don't mind taking things back for you, like groceries if that happens to be it. I don't get any bad vibes from these people, and believe me, in the cab business bad vibs are usually what a person gets. Not at this cab service you get bad vibs...you feel good here.