I've always used Alamo; they are reliable.

They kept pushing upsells—insurance, car upgrades, fuel fees, etc. I was talked into buying additional insurance by the front desk, even though it was only around 100 dollars, it was quite annoying. I thought the insurance included in my order was comprehensive, but their 'full insurance' was actually just an extra coverage similar to full insurance in other rentals. In the end, Alamo added another super coverage. This was the third Alamo I encountered during my trip at San Francisco airport, the previous two didn't ask these questions. Overall, the worst experience of this trip!

They efficiently handled the car exchange, and the vehicle was very new.

The self-service car rental machine is very convenient to use.

There were more people in line here than at any other rental company, mostly Chinese people, probably because their promotions in China were quite successful. The explanation about the vehicle categories was not very satisfactory.