We use FastPark their lot is very close to the airport. They have covered parking that is a plus in FL. The shuttles to the airport are quick and may add 15 min. to your arrival at the airport. They give you a card with your space number and when you return there is a shuttle waiting to take you to your car. We have used the $17.00 parking at the airport but found it a long walk to and from the car. With fastpark the shuttle goes from baggage claim to right behind your car. Complimentry newspaper on arrival at the lot, and bottled water when you depart. Join the rewards program even if you will only use it once it saves time at check in. $6.34 per day. Check the site.
http://www.thefastpark.com/location/orlando/