In the spirit of my old thread "was there ever a year the Stones were better than the Beatles" I'd like to take a different comparative approach. The Who & Led Zeppelin were (IMO) at their peak during the years 1969-1975. I know you could throw in some other bands (The Stones, Pink Floyd etc...) who defined this time period, but think about how much of The Who & Zeppelin's output defines classic rock radio today. Both bands were on a similar trajectory during these years, and many of their key albums were released during the same years. So, let's take a look at their output, and weigh in with your opinions. 1969: Led Zep I & II vs' Tommy 1971: Led Zep IV vs' Who's Next 1973: Houses of the Holy vs' Quadrophenia 1975: Physical Graffiti vs' Who by Numbers also, discussions about each bands live prowess during this era are welcome. However, I didn't put Live at Leeds up against Zeppelin III, because I don't think it makes sense to compare live & studio releases.