Enterprise is the best rental car agency, period, because when you reserve a car, they always have one waiting for you. The Phoenix Sky Harbor location was excellent on my recent trip. I was on the road in just a few minutes, even though they took the time to show me the important features of the car, and they even printed out directions to my hotel for me. They also made sure I knew exactly how to get to the highway so I wouldn't get lost. They even helped me with my luggage! They whole process took maybe 10 minutes. The return was even quicker, probably 3 minutes.