My Two Cents Worth is this: I saw Zep 3 Times in Baltimore April 1970, June 1972, July 1973. My Take was June 1972 they were at Their Peak* That's what Jimmy Page also believed and chose June 1972 Shows for HTWWW. After the Beatles My # 2 was always LZ until up to and after July 1973 Houses of the Holy Tour. After that My Music Interests Shifted to The Eagles as My # 2 Band after the Beatles. As Far as Musicianship No One But CREAM came close to Led Zeppelin. I believe Jimmy Page coming from the Yardbirds was able to take influence from Jeff Beck's Technic along Eric Clapton's Long Riffs and Runs and synthesize them into something of His Own. When I Listen to Jimmy Page, I here a lot of Jeff Beck and Eric Clapton. The Lemon Song (Killing Floor) you really Hear the Beck Clapton Riffs melded together in the two parts and thread of that Piece. However, Jimmy Page's Acoustic Talents has His Own Innovations and Developments. When you listen to Page laying the Blues Down 1969-71, it's the Real Deal & Hard to Beat. Since I've Been Loving You is the Ultimate Heavy Blues.