My list
would look a lot like ONMILO's list. I was serious, but when I did the post I forgot to put it in and it was already gone, so...
I would personally add Taurus polymers, as we had so many come back and servicing for them, as lamented elsewhere, could be incredibly slow; they would always fix it, but it could take a while. I owned a PT-111 for a while that worked well, and I liked it but it was stolen before it broke on me. I had a PT99 that was great, and the new ones I considered sleepers.
We were told by BATF and our owner that we were the only business in the country that could refuse to sell to somebody if we didn't like their looks, or if the deal felt strange for some reason. We very rarely exercised that privilege, but it was nice to have it. I know that statement will offend some, but there is a very creepy feeling sometimes that makes you wish you weren't workin' today with some customers. Not about race, sex, or class; just something in your gut. My partner in the shop knew it too, and we would sometimes both go into condition red and then check to find the other there too.
I also hated to sell to girlfriends of guys who brought them in to buy guns that hadn't a clue; not that the girlfriend was clueless, the guy was. Girlfriend might be asking all the right questions and boyfriend would blow thru it and tell her "what she needed to buy..."
Made you wish slap therapy was legal.
The only thing worse was fathers doing that to daughters...
Sorry, out of control there for a minute...
Cheers, TF
"Everyone knows the small concealeable handguns go to the left side of the place setting..." Inara, FIREFLY