There is discussion of this in the transportation forum. I have used them twice and got very clean, low mileage quality vehicles. NO SMOKING will appeal to many and check in is very fast. There was some BS about not dealing with 3rd party insurance which I ignored, but their policies are stated on their website.
I had a short wait one of the times but the paperwork was completed in about 1/3 the time that Payless consumes. Note that they will only hold the vehicle 1 hour over, but maybe that's justified if they really are holding what you requested. But you can change the details of the rental with no rate change, so you just need to call in if you are delayed. Or just do more than one rental at spaced intervals. My last rental was a Hyundai Accent, and, granted, it was a base model, but it was a rocket ship.....right down my alley.