"The Rain Song" is one of my all time favorites...…….I'd have to rate it above "Stairway to Heaven".
I have been fortunate enough to have seen them live 5 times, and page and plant tour as well. only band who walked on stage with no opening act and played for 4 hours. i like Kashmir and When the Levee Breaks alot, the Physical Grafitti album was there best effort IMO