Hey BobM can you provide some recommended music (as far as sound quality and muscianship) I'm looking to expand my collection of reference music. 
Oh man, so many to choose from. OK, here's a few in a couple of different styles that are not in the typical audiophile lists; pick what suits you:
- Clayton Brothers - Back in the Swing of Things (horn based mowtown inflected jazz)
- anything by Big Phat Band (modern big band swing)
- Eric Bibb - Diamond Days (blues and voice)
- anything by Vienna Teng (pop/jazz female vocalist with a twist)
- Lee Ritenour - 6 String Theory (Rit and a bunch of guest artists in many styles)
- Eagles - Long Road out of Eden (somewhat recent release by them with great songs and sound)
- John McLaughlin - To the One (guitar fusion)
- John McLaughlin Trio - Live at the Royal Festioval Hall (acoustic fusion and percussion w/ Trilok Gurtu)
- Trilok Gurtu - Miles/Gurtu (jazz electronica and amazing percussion)
- Mavis Staples - You are Not Alone (gospel blues)
- anything by Oregon
- Pat Metheny - Secret Story (one of his solo albums)
- Robbie Robertson - How to Become Clairvoyant (blues inflected new songs by "The Band" lead)
- Tierney Sutton Band - American Road (just a great jazz & vocal album)
- Toots Thielmans - Brasil Project (jazz harmonica and bossa nova)
Enjoy,
Bob