My only comment is, WGAF. Those Prima Dona’s are totally meaningless in today’s world. Their petty differences are but a whisper in a cyclone. Besides, of Rock Groups of that era Led Zeppelin made DP look like wannabees.
1. Blackmore is an infinitely cleaner, faster, and more energetic guitarist than Page could ever want to be. Page may have ripped off better riffs, erm, come up with better riffs, and sold more albums, but Highway Star (which is responsible for more speeding tickets than any other solo in the multiverse) is multiples stronger than that on Heartbreaker (which sounds like a 15-year old at Guitar Center).
2. Led Zeppelin was an awful live act after 1970. Deep Purple, from inception through Coverdale and through Perfect Stranger, was molten hot.
That said, Roger Glover and JPJ are evenly-matched, their vocalists are both legendary (though only one of them played Jesus) and while I prefer Ian Paice, you can't deny that Bonzo remains inspirational.