We went with Hertz and a
AAA discount, prepaid. Worst experience ever at John Wayne Airport. No car for us. We could upgrade for $40 more. I said no. So they made us wait another 40 minutes and then gave us the same car they had offered before for the extra $40!
Then we had to walk to our car, about 5 blocks, lugging the luggage. We must have walked past 100 cars that they would not let us have.
Never again, Hertz!