Swung by Pioneer Motors in Huntsville over the weekend since a few people here asked about them. They keep around 33 vehicles, mostly family SUVs and sedans. They were totally fine with my mechanic doing a once-over, which honestly settles half the trust question.
Lot address: 2973 Family Plaza, Huntsville, AL. Visitor parking: Front-lot customer stalls facing the office; overflow on the side street near Huntsville lot gate.
Paper side: licensed with the state (looked it up), about 95% of stock has title in hand per the office, and they offer a 6-month powertrain warranty on newer units.
Overall: good people to deal with. 7 years in business around family SUVs and sedans, doc fee $299 and it's on the window sheet, no games. I'd send a family member there.