I Vote Super Shuttle as well! and to answer the question about booking early. For the most part the shuttles come by every 10 mins or so. So even if you wait, it isn't a long one. There is a shuttle/ taxi area out side the luggage pick-up area. And..our driver on the way back to the airport said it is always 10 dollars a person from any hotel near DL back to the airport. Even when you call or look online it calculates 12 or more per person...but it should be 10 when you do it. When you take the Super Shuttle from the Airport to your hotel, they will give you a business card with a number that you call so you can schedule pick-up for departure the night before even. I remember calling for a super shuttle pickup the night before (on my cell phone) as I was enjoying a FAT turkey leg in front of the castle hahahah...