I think as long as you keep a good mix of quality and priced to sell items you will be all right. Not everyone is a stereo guru and can justify expensive equipment. It also never hurts to get them in the door with something reasonable and let them get hooked on the nice stuff for later... kinda like selling "candy". I like the brands you ratteled off, Pioneer would probably be good to add. I think I would also try to offer special orders from brands that you don't normally carry when they also have the installation done there. Granted you might not agree with what they want, but sometimes thats business. Most of this you probably already know but I'm just throwing in my $.02
