Which one of the 3 Stereophile test CD's to buy?


Please, I need help on this. Do you recommend me to get all three Stereophile test CD's or just one? which one and why? I'd appreciate your recommendations. Gracias! (thanks!)
jorge_err
they're all cool. If you want a copy of the 2nd one, I can sell it to you for $10 shipped. It's unopened, I have an extra one. Email me back and I can list the contents. cheers
Tom Schuman
You might also want to consider the XLO Test & Burn-in CD that is available from Audio Advisor. I own all 3 from Stereophile and the XLO and tend to use the XLO most often.
what is the use for theese cds ?
are they use to tune the systems, or to burn in the systems ?