NGL that's one of my least favorite Zep tracks. The fact that they had a bunch of songs still in the can when HotH was released (Houses Of The Holy, The Rover, Down By The Seaside, Night Flight, Black Country Woman) that were IMO better than several tracks on that album is an argument in your favor though.
Let's go with one of those old ones, my mind choice off Physical Graffiti these days with everybody dying (most recently referenced above, Brent Hinds of Mastodon who had someone make a left turn in front of him on his Harley yesterday)