Always through Easyrentcars!

Alamo was good but their agent did not really have time to explain what insurance is for what. I recommend buying at least the tyre insurance from them so you are not mandated to pay a huge bill in case of a puncture. (For the comprehensive insurance you have a lot of options via Easyrentcars, Credit Cards, Travel insurance, etc. Usually the one at the Alamo counter is the most expensive. So do the math before you travel!) In case you want a specific model as I did: Alamo has a huge selection of cars at the LA branch. When you get off the bus you can actually quickly check what cars are in the bay. I really wanted a Mustang convertible. Since I did not know to check in the bay before entering the branch I asked the agent if it was available. He offered me a Mustang Cabrio GT as an upgrade. But since I was not willing to pay a £250 upgrade on top of the £250 rental I took the risk of having a similar model. Luckily they had several Mustang convertibles available and I just took one of them without upgrading.

Easyrentcars is a superb provider. They make it super easy to find the right car for your needs. And I really like their feature that re-books the same car in case it becomes cheaper over time.