I to listen to country as well and there are not to many well recorded disc's out there. Here are a few I've found as well as some Blues, etc. Alot of these I use when trying out new equipement. The following are all standard redbook C.D.'s unless noted.
COUNTRY:
Alan Jackson - Drive (very good recording)
Alison Krauss - Forget About it / New Favorite (both great)
Billy Dean - Fire in the dark (very good recording)
Dixie Chicks - Home (pretty good recording)
Dolly Parton - Halos & Horns (as above)
Gretch Peters - The secret of life (as above)
K.D.Lang - Shadowland (very good recording)
Lyle Lovett - Joshua judges Ruth (as above)
Keith Whitley - A Tribute Album (mostly great)
Rodney Crowell - The Houston Kid (as above)
Travis Tritt - Down the Road I go (as above)
BLUES:
Bonnie Raitt - Silver Lining (very good)
Colin James - Bad Habits (very good)
Debbie Davis - Tales from the Austin Hotel (pretty good)
Duke Robillard - Stretchin' out Live (very good)
Eric Clapton - From the Cradle (very good)
Junior Wells - Everybody's gettin' some (very good)
Keb' Mo' - Slow down/Just like you/Keb' Mo' (all very good)
Muddy Waters - Folk singer *Ultradisc II gold CD* (V Good)
Robert Cray - Strong Persuader(v good, gold disc is better)
Ronnie Earl - Ronnie Earl & Friends/Healing Time (both VG)
Roy Gaines - I got the T-Bone Walker blues *gold disc* (mostly great)
Terry Evans - Blues for tonight (mostly great)
OTHERS worth a listen:
Eagles - Hell freezes over, use to test bass extension
Jethro Tull - Thick as a brick
Madonna - Immaculate Collection, surprising soundstag
Pink Floyd - Dark side of the moon (a must, remastered)
Roger Water - Amused to death (shows what your system can do and wow your friends)
Anne Murray - Croonin' / Country Croonin' (both very good)
Diana Krall - ANYTHING !!!!! there all good to great
Eva Cassidy - Live at Blues Alley - (great!)
James Taylor - Hourglass / October Road (both VG to great)
Jesse Cook - Free Fall (VG to great)
K.D.Lang - Ingenue (VG to great)
Rosanne Cash - 10 song demo (VG) (yes, thats Johnny Cash's daughter)
Tracy Chapman - New Beginning (VG to excellent)
Well Highend64 that should keep you busy for awhile if not put a dent in your bank account. There should be something in the about you will enjoy, I know I do.
Good luck and good listening !!!!!!!!!!