I want to purchase new speaker/home theater setup (including surround sound, tv, blu-ray player, etc.) for my living room, and I'm going to do it through the local electronics store in my town because I prefer to talk to people and get personal help. The store carries TV's all from low-end for college students up to nicer/60" ones. Are there any specific things I should ask to make sure the salesman knows what he's talking about? Are there any specific things in-store that I should be looking/asking for? In general, I also just want to make sure the salesman is really knowledgeable about these things and that the place is a good store. Thanks!