Easy to find good sounding used LPs 70s/80s.....

Great start here are a few more:

Steely Dan-Aja (need this in addition to Gaucho)
Fleetwood Mac-self titled-again gotta have
Heart-Dreamboat Annie
Boz Scaggs-Silk Degrees
Doors-Best of
Cream-Live at Royal Albert Hall
Dire Straits-Brothers in Arms
Lynyrd Skynyrd-Gold and Platinum
Toto-IV
Foreigner-Self Titled and IV
Cars-Heartbeat City
ELO-Out of the Blue and OLE ELO
BTO-Not Fragile
Doobies-What Were Once Vices are Now Habits
J. Geils Band-Freeze Frame
Bob Seger-Nine Tonight
Bad Company-Straight Shooter
38 Special-Flashback
Huey Lewis and the New-Sports
Cheap Trick-Dream Police
Clapton-Behind the Sun
Kansas-Point of No Return
Tom Petty-Damn the Torpedos
Pink Floyd-The Wall

All of the FREE (with Paul Kossoff and Rodgers) studio albums.

Supertramp - Crime of the century

Pretty Things - Parachute

King Crimson - In the wake of poseidon

Gentle Giant - In a glass house

ELP - same (1970)

UK original presses of these sounds best, no doubt!

Little Feat - Dixie Chicken, Waiting for Columbus
The Band - Rock of Ages, Northern Lights Southern Cross, The Last Waltz
Steely Dan - Katy Lied
Bob Dylan - Blood On the Tracks, Oh Mercy
Joni Mitchell - all of hers
Bonnie Raitt - Green Light
Maria Muldaur - Waitress in a Donut Shop
Weather Report - Heavy Weather

Hard to believe THE REQUIRED ALBUM for ANY AND ALL vinyl lovers isn't listed:

Pink Floyd - Dark Side of the Moon

Yeah, OK, I guess....DSOTM is one of those records though - songs like Money, Breathe, Us & Them, Time etc...they're all kind of like "Stairway to Heaven" or "Freebird". Maybe I'm jaded, but I just don't really need to hear them again for many years to come (and there are MANY LPs that have sonics that are far superior to DSOTMs). Sorry, just one of those pet peeves.

-Richard

These albums sound great:
Paul Kelly: Post
Midnight Oil: Diesel and Dust
Los Lobos: Kiko
Descendents: Milo goes to College
Fugazi: 13 Songs
Bob Marley: Exodus
Marvin Gaye: What's going on
Al Green: anything on Hi Records
Stevie Wonder: Innervisions
Bob Dylan: Rolling Thunder Review 1975
David Bowie: Young Americans, Ziggy, and Hunky
The first two Eagle albums
The Faces: Wink
The Who: By Numbers
JJ Cale: Troubadour
Anything by Joni Mitchell
James Taylor: Fire and Rain
Tom Waits: Heartattack and Vine
The Clash: The Clash, London Calling
Prince: 1999
Bruce Springsteen: Nebraska
Neil Young: Zuma
ABC: Look of Love
The Smiths: Hatful of Hollow
Beat Farmers, Tales of the New West