It The Parking Spot has allocation in Philly look through your Rutgers season ticket packages for a coupon. I got a day free when flying out of JFK back in January. Seems to be a very reliable outfit.
Pacifico not bad. They drive you in your car to terminal and will pick you up with your vehicle. You just leave the terminal and drive home. Saves time without having to shuttle back to lot. Not expensive with coupon on website
Try Colonial Parking. (You should reserve just to be on the safe side.) Shuttle to and from airport. It is south of the airport by a couple of expressway stops.)
The Parking Spot on Essington Avenue. Easiest in and out of any airport ever. 5 Minute shuttle to airport. They run frequently. If you are coming in from NJ it's super easy.
I use the Parking Spot at Newark and Philly. Very good service. Can always find a coupon on-line at their web site.
Additionally, as someone mentioned above, they sponsor RU Athletics.