I've mainly used enterprise because I get a great rate from my company ($35 for a day for a Tahoe) but they're customer service is pretty crappy. Piece of advice: Make sure your mark all dents and scratches on the car on the receipt before you leave the lot! My dad and I did an inspection, pointed out the dent, and the guy said it shouldn't be a problem. Well it was a problem when we went to return it.