'Who's Next' just may be the most perfect rock album ever made. No weak tracks, and it has the most compelling album closer - as well as set closer live - that a band ever had with "Won't Get Fooled Again". And lyrically, it is miles ahead of 'Led Zeppelin IV'. Townshend's songwriting is consistently brilliant on 'Who's Next'. Zeppelin's biggest weakness was always lame lyrics, and it sure shows on several of 'IV''s tracks ("Black Dog", "Misty Mountain Hop"), although the ensemble group playing is fantastic throughout. As a complete album statement, though, 'Who's Next' easily takes the cake.