I've only been to Turner's once, the store in Redondo. Did a PPT there. Middle of the day, busy, and they treated us very well. So well that after we did the transfer, I spent all the money I had received for the firearm sale on a new pistol, plus another $500 on ammo and assorted gear.
I believe it when I read that others have been treated poorly at Turner's, but my one and only experience there was all I could ask for.