My wife continues to use Winner Airport Parking, a valet service at around $9 a day with the Triple A discount. The advantage of a valet service, in my opinion, is they accept responsibility if your car is damaged in their lot. They inspect the car before driving to to the airport, which my wife always notes since on one trip over a year ago the vehicle was damaged and they repaired it on a subsequent visit. Another advantage to Winner is they can wash, detail or service your vehicle while you are away at what I consider to be a reasonable cost.