B sides. That tells me what decade was the best and I'd have to say the 70's since I listened to whole albums not individual songs. I think the decade was an inflection point for music and it's why I think my music tastes are so diverse.
Some of my favorites that I could listen to again and again and did when I'd road trip...
Zep, The Who, Stones, The Doors, Floyd, Neil Young, Springsteen, Elvis Costello, The Clash, T Rex, Seger, Reo Speewagon, Bob Marley, Toys in the Attic, Talking Heads, Grateful Dead, Tom Petty, Bowie, Roxy Music, Allman Bros, The Eagles, B-52's, Joe Jackson, Traffic, Steve Miller Band, Iggy Pop, Supertramp, Ramones, the best Genesis, Grank Funk, ZZ Top, Lynyrd Skynard....on and on and on...
The beauty is most of them had longevity.