Had a great experience years ago with Avis. Flight into SFO was delayed, so I got out there very late and still had a long drive down to Santa Cruz. Got to Avis and it was a mad house. Staff was very professional, kept explaining to people that the cars were there, they were just short on runners to bring the cars down and they would get everyone done as quickly as possible. While I was at the counter just checking in, this guy came up 3 times yelling at the girl, demanding his car, "I have a reservation" etc, then the last time demanding that Avis pay for a limo to his hotel. Each time the girl was very calm explaining the car was on its way, please be patient. Every time the girl apologized to me, to which I said "No reason, its not your fault". After the last time the guy came up, the girl looked at me, smiled, slid a key to me and said "Spot J29" I put my head down and walked out as fast as I could, toting my golf bag.
Got to spot J29 and discovered a Mustang convertible. Thankfully my clubs fit somehow and I have to admit, driving a convertible down PCH was kind of cool.