We've always had good experiences with
Budget after joining Fastbreak (I think that's what it's called, lol). Before, though, waiting at the counter would always take a while, then we'd always have to wait for a car. Fastbreak has always been we've gone out to the garage, been handed keys, and were on our way.
That said, our next trip I booked with
Alamo due to the great rates. I'm a little concerned about it too. I'm wondering if we should join their "express" service, or maybe even use their online check-in (haven't heard much about this). I have a reservation with Dollar, too, so I'm not sure if I should just go with them and pay the extra $40.