We had a very negative experience with the desk person at Dollar in Orlando. When I was asking him about some of the fees he was adding, (We had a $100 rental that was suddenly totally $450!). He made a comment that women from this country do not know their place. He was of another nationality. That comment hit me the wrong way and the fact that they were going to charge me another $50 so my husband could drive the car (The reservation was in my name). So I cancelled the reservation then and there before even getting the car, but they still charged my CC. I dealt with my CC company to get the charge taken off.
I have actually had good luck with Enterprise. I like that the price I reserve it at is the price I pay and both my husband and me can drive it. I have had an experience like
@draybook had with a wreck and their insurance company saying it would only pay for a small car. I refused the Aveo and went directly to the other person's insurance to get a vehicle I felt safer in and the insurance company allowed for an SUV instead. Enterprise in MCO has always done right by me. We had one problem, the car wouldn't start with the key. It was a new Grand Jeep Cherokee when the keyless starts just came out. They were delayed in showing up to take us to get a new car. It took about 3 hours to get it sorted out and they told us they were coming within the hour. After talking with management at the airport via a phone call, a new car (nice convertible) was dropped off at our resort (we didn't have to go and pick it up) and the entire two week rental was comped. Management was waiting for us at the airport when we were dropping off. He apologized again for the situation.
Whichever company you use, always have a copy of your reservation in hand, to show the exact cost. Take pictures of car, inside and out while the rental car representative is with you. I always get a business card from the representative too.