I really enjoy John Fort Audio. While their showrooms aren't as fancy as many others (unless they've changed since my last visit), it's the best place if you want to let the systems speak for themselves.
My first visit, I walked in with a stack of source material and was promptly and politely shown to one of their rooms. After being left alone to my own devices for over an hour (which I thouroughly appreciated), my Catholic guilt started to kick in (even though I did not want to leave) and went back to the main office to thank John and Duncan. Their response - "What?!?! You're done already?"
They don't hover. They don't mock your equipment or choices. They don't tell you what is the "best". They help make you feel confortable and put you in the mood to listen to music - then they let their goods speak for themselves. They know their stuff, but don't feel the need to prove anything (unlike other dealers I've experienced).
While I did not, nor have not, purchased anything from John Fort Audio, I put them very high on the list of dealers to check out in Dallas.