The number one reason I chose National is the hassle-free pick up and return. With aisle service, you don't even need to wait for someone to give you a receipt when you drop off the car. Just parked n go. For pick up, I just print out my confirmation and go straight to the car. No waiting in lines or dealing with a counter rep. Even if the price is a little higher than other places, in the end, I just book with National. It's worth the peace of mind.