Both albums are classic. It is very difficult for me to choose because I do love the heavier sound of Led Zeppelin. However, I am also a Who fan, saw them in concert 1979 —yep the Who disaster concert. IMO The Who were much more innovative.
Im suppose to choose between albums, so I’m going with Led Zeppelin. I listen to that album a lot more than My Generation. If the choice was Quadrophenia, Tommy, or Who’s Next…..Hands Down the Who wins.