Outlier, so what if they pick a crappy sounding recording? I believe that a well put together high end system will serve the music regardless of the recording quality. Good music will sound great on any system, but it will come across even better on a well put together and setup high end system. Good systems sound great only with audiophile recordings -- great systems sound good on anything! Just an opinion.
Which track do you demo to your friends?
You know when a friend arrives at your house, sees your stereo and says "how much did all this cost". You tell him/her the $$$ and they say "are you mad?" Of course, the next step is to justify it by playing something that will make their jaw hit the floor. Which track do you play? Me, I play a track called "Spanish Harlem" by Rebecca Pidgeon off an album called "The Raven". Works every time :-) Their jaw hits the floor, and no-one speaks till the song is over. Then they something along the lines of "Oh, I see what you mean". Follow up/alternate demo tracks for me would include "Fire and Roses" by Mimi Goese and "Ordinary Life" by Christen Barry. What track do you play in this most demanding of moments?