Steve Collins held 2 WBO (Wicked body odour) belts, hardly unified !
WBO was essentially Barry Hearn. Roy Jones Jr was - at the time - the best pound-for-pound boxer in the world...they never fought.
Then there was Joe Calzaghe, a stunning fighter.
The middleweights of the 80s and 90s were probably the golden age of boxing.
Sugar Ray Leonard, "Marvellous" Marvin Hagler, Thomas "The Hitman" Herns, Roberto Duran, etc.
Now we have circus freaks like Tyson Fury...I'll leave it at that.