Dude. You love the same CDs I…did. In the 70s. When I was a teenager. 
But one is simply unable, I’m afraid, to justify selecting War Child over Aqualung.
No, no. You’re seeing a rule that’s not there. Doesn’t have to be your only choices. Doesn’t even have to be your favorite choices.
Before we leave that whole unfortunate prog.rock era:
Yes: Fragile
Genesis: Selling England by the Pound
Flogging Molly: Swagger
Subhumans: The Day the Country Died
Pink Floyd: The Wall
(There’s too many to pick from, but I tried to not list any that had already been scribed above.)
The Allman Brothers - Eat A Peach
Taj Mahal - The Real Thing
Jefferson Airplane - Surrealistic Pillow
These lists can keep going forever as far as I’m concerned. Don’t forget Voyage of the Acolyte by Genesis guitarist Steve Hackett.
But as you have noted yourself, these lists aren’t exclusive to one trio. And who could mention Tull without a nod to their opus, Thick as a Brick? I’m also fond of Too Old to Rock and Roll and Songs From the Wood.
djm
I’ve been revisiting Baba O’Riley lately. Can you believe these guys were ever this young:
nope…not a chance 
havent read the whole thread;
maybe these have been listed already, but nevertheless;
my 3:
Fairport Convention: Leige and Leif
Traffic: John Barleycorn Must Die
Beatles : Sgt Pepper
the mighty early '80s triumvirate:
King Crimson, Discipline
Talking Heads, Remain in Light
Peter Gabriel, Security
OK, if we’re gonna get into prog rock and art rock:
King Crimson – Discipline
Gentle Giant – Octopus
Happy the Man – Crafty Hands
And Joni Mitchell albums:
Ladies of the Canyon
Court and Spark
Hissing of Summer Lawns
I’m glad to see Heavy Horses get a nod. That is my favorite Tull tune. I painted it and it hangs in my dining room. I was reading through this thread thinking- Heavy Horses. I’d have to go with Aqualung though for perfect album.
I forgot about Rubber Soul- I agree- perfect!!!
What about albums that literaly turned pop music on it’s ear?
Meet the Beatles-their first on Capitol label,Nirviana’s Smells Like Teen Spirit, or Pearl Jam’s Ten immediately come to mind. Sorry, I considered the 70s disco era a vast wasteland.
Funny how many of us tend to go to our “teen years” for first choice of perfect albums.
This one’s worth mentioning. The whole album is so enjoyable, first song to last. It’s perfect for road trips.
Tori Amos - Scarlet’s Walk
There arn’t many albums that are good from start to end. There’s always that song that got thrown in to make the album just long enough to be an album . . . they’re always the songs I skip or leave out when I make a tape for the car.
Here’s another fun one.
B52’s - Cosmic Thing
B52’s - Cosmic Thing
Yep.
Have to agree on the great choices by Denny especially Looking In by Savoy Brown and American Beauty by The Grateful Dead. I don’t know if these would be my top 3 picks but reading this thread triggered some memories on other albums;
Loosen Up Naturally- Sons Of Champlin
The Notorious Byrd Brothers- The Byrds
Retropective- Buffalo Springfield (I know, a best of, but still stands on it’s own i think)
…also get more than a little nostalgic thinking of those Jethro Tull albums like Songs From the Woods (Velvet green) The first time i saw Tull they were doing A Passion Play -not their most popular album but a memorable concert of it! Actually also saw The Who doing Tommy at the Berkeley Community Theatre…sorry about almost name dropping!
I agree!
I also love Under The Pink!
IQ - Ever
Quicksilver Messenger Service - Quicksilver Messenger Service
Gentle Giant - Three Friends
Can we add more?
Jackson Browne - Late For the Sky
Le Orme - Uomo De Pezza
Marillion - Misplaced Childhood
Also:
PFM - Per Un Amico
PFM - Storia di un Minuto
Poco - A Good Feeling to Know
Traffic - Low Spark of the High-Heeled Boys
Strawbs - Bursting at the Seams
Van Der Graaf Generator - H to He
Renaissance - Live at Carnegie Hall
Radiohead - The Bends
XTC - Skylarking
Wall of Voodoo - Call of the West
Man, why are you wearing a sheep on your shoulders? “Oh the shearin’s no for you”