I'm planning on purchasing a nice new audio system (head unit, amps, subs, etc. - the whole lot) for my scion tc. I know a lot about the different components (amps, subs, etc.), how to evaluate them, good vs. bad, etc. The only problem is that I have no real experience installing them. Therefore, I want a company to possibly install all of this for me. For those of you that have had a corporation do this in the past, which one and how was your experience? Did they do a good job? Is the sound system still holding up a long while later? I know Tweeter, Circuit City, and Best Buy performs this kind of service. Any other notable corporations that do as well? Any recommendations/advice/guidance/stories are all appreciated. Thanks everyone!