Hertz SFO his an Ultimate choice location - and they have some sweet rides to choose with a midsize reservation, as I see you are President's circle. Camaro's, Mustangs, Charger's, more boring Chrysler 300's, and occasional SUV's if that's your thing.

At Ellis street they will upgrade you to the full size - something as uninspiring as a Sonata or Camry - and you'll be stuck with it. Mason street location will have a bigger choice of boring cars, but their rates are sometimes higher than those at Ellis.

I agree that $150 is quite a difference, though