Is this the greatest replacement lead singer of all time?

I also agree. The film of how they found him is also interesting.

I watched that documentary last week on Amazon or Netflix, can't remember what it was called though

Phil Collins - Genesis

I would have gone with ac/dc

Both worthy contenders. It's down to who you like I guess.

and anyone who says finn for buckingham deserves a kick

Steve Hogarth not a bad replacement for Fish in Marillion - certainly in the early years at least

1st time i'd heard this version of song but must admit he's a cracking singer JM

Did Brian Johnson measure up to Bonn Scott?

Back in black would suggest so.

there's a documentary again amazon or netflix about the band and its history but a while since I watched it and again I cannot remember what it was called

Not sure about Axl Rose replacing Johnners!