I'm looking to dip my toe into the audiophile wading pool. Space and finances dictate that I buy an all-in-one mini-system like the Arcam Solo or Linn Classik. I listen to everything from Madonna to Mozart, but primarily to classic jazz (e.g. Miles, Coltrane) and acoustic. Are there any other music systems I should be looking at? What are good CDs to bring to a store to demonstrate a music system's strengths and weaknesses?