How much trouble is it getting the shuttle to the car rental centers? I am looking at the rate I can get for enterprise with the entertainment book coupons, and am astounded at how much cheaper they are!!!!!
I prefer to use the in-terminal agencies just for the convenience. I don't have to wrestle my bags on/off the bus, and I don't have to go out of my way to get the car. Only you can decide if the convenience is worth the $$.