I was a little worried to rent from a smaller, lesser known rental car company. I read the reviews on extra charges and upgrades that were unapproved. But it was hard to resist as their prices are so much better then the big boy national chains.
If you stripped the Advantage sign off of their walls and replaced it with Hertz or Enterprise, you wouldn't have noticed any difference. The staff manning the rental car desk where I confirm my reservation were very friendly and professional. They didn't try to upsale me or hide anything.
When I went downstairs to pick up my car, my major concern was Advantage adding misc damage charges after I returned it. So I used my iphone and recorded every inch in a video and noted even the slightest scratches on the form. We received a clean, "new" Toyota Camry with AC, bluetooth and mp3 player. Perfect for our needs.
I've checked my bill since and no extra charges have been applied. I would certainly use them again, and use the same tactics to ensure I didn't get charged extra for phantom damages.
The only real issue with this rental car facility is that I went downstairs to the cars first instead of straight to the reservation desk. Kind of a nuisance as their signage is not very clear.