I like the Eagles "hell freezes" CD as well, but my faves are:
Jacques Loussier Trio: Bach Book...
Awesome for separation and imaging... some incredible drum solos...
AL DiMaola, John Mclaughlan, and Paco DeLucia: A night in San Francisco..
Absolutely incredible Flamenco guitar work, amazing separation!
Pink Floyd :Dark Side of the Moon...
Need I say more?
Santana: Supernatural...
Very dynamic, clean recording.
Note: these are for SQ demos, not for bass... for bass, I stick to various rap and trance CD's...