To me I barely ever listen to anything other than 73-78.
Been on a '78 kick lately .... Love Donna and Bobs Vocals together
Its hard for me to pick a Era anymore that i consider all time best
For instance Scarlet-> Fire->Estimated-> Eyes peaked in the 80's - IMHO
And yet the one drummer years are so jammy and out there
I guess the bottom line is Thank God they changed through the years and didnt get stale and beat a dead horse into the ground