I am a musician and audio engineer. Without going into details, they understood the subleties of the differences in sound of the various audio equipment they have to the point that I was able to make the proper choice for myself weighing audio quality, audio characteristics and cost.
I was in there the other day looking for a high end HD TV. We compared the equipment I have to the specs of the TVs and what my viewing requiements are. Based on their recommendation, I can save a grand on the TV by integrating it into my stereo (from them). Very helpful.
Pros: Understand subtleties of audio and video tastes
Cons: Expensive, if that's an issue
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