I booked a rental through Costco Travel.....
the line was extremely long( like waiting for a ride at Six Flags).
If you prefer to use a debit card, they will slap $200 dollars more on hold in your account and run a credit check. I think that it's the most ridiculous thing ever.
I hate the fact that I didn't get to choose my car at their garage. A slip was given to me on where my rental is parked, and I had to get to it on my own; without any personal interaction if i had any questions about the vehicle. I didn't like the Ford Fiesta they rented out to me. The breaks were making some sounds....AND!!! it was cherry red. I didn't like a cherry red car.
Other companies gave you options and are more personal. Some even pull the car up for you, and help you put your luggage in the trunk.
I like to be treated like a princess.
Their insurance is also pretty expensive. I was shell shocked and for the very first time, i drove a rental without any form of insurance. Thank goodness, the car was alright. My damage: $152 for a 6day rental. Not bad.