A gun shop that I have used successfuly in the past is Gary's Guns & Tackle in Fairfield. 1135 Magie Ave., 513-829-8588. They have a small stock of new and used handguns and long guns. They will order anything for you for a reasonable markup. They take credit cards for no up charge.
I first ran across Gary at a local gun show, but he hasn't had a booth at a show in several years. I'm not sure how you define "friendly" staff, but they will gladly show you anything they have and will check availablity immediately of anything they don't have. They do expect you to know what you are looking for.
I have not purchased anything from them since the Brady wait period expired, because I have gotten in the habit of going to gun shows and taking home what I purchase; plus I no longer work close to them.
BTW, let us know what you find out from AIM.
You might want to check out some of the dealers at the gun show this week end in Wilmington. Pro Gun show, Roberts Centre. Some of the dealers that frequent the local shows (Pro Gun and Bill Goodman) have friendly staffs and decent prices.