This is a full list of all the Dead's official label releases... it seemed too daunting to try and rank anything else regarding GD. Vote for your favorites and let's see which album is everyone's favorite!
http://m.ranker.com/list/the-best-grateful-dead-studio-albums/analise.dubner,
Anthem of the Sun
Aoxomoxoa
Europe '72
Grateful Dead from the Mars Hotel
Live/Dead
Steal Your Face
Wake of the Flood
Workingman's Dead
Grateful Dead
American Beauty