It's your pretty standard airport car rental company, but I happen to like this one slightly more than the others because they do a nice job of getting you in and out of your car in a timely fashion. If you sign up for the Avis preferred membership (it's free), you can bypass the regular customer line and go right out to the outdoor booth and they have your keys waiting for you. It's definitely a nice perk.
When you return the car, there's a guy who comes right to the car, checks it out and then gives you your receipt. You just have to keep your eyes open for the Avis car rental return when you bring it back. Give this place a try - just make sure to sign up for the preferred membership.