Every player on this (original line-up) track is sick. These aren't just soul-less solos being performed here. Watching John McLaughlin play a double necked Gibson SG is much more entertaining than Jimmy Page riffs any day of the week. Birds of Fire(1971) and The Inner Mounting Flame (1973) are both killer albums. The George Martin produced Apocalypse (1974) (featuring the London Symphony Orchestra) is a little weak in comparison. Just like with GnR, the symphony cut the balls off this powerful group.
Speaking of GnR, here is a link to an interview conducted by Andrew 'Fig' McKeon with former GnR drummer Steven Adler.