I was just thinking about this and i would like to hear your opinion folks.

70s

Ali vs Frazier 1 2 3
Norton vs Holmes
Holmes vs Shavers 1 and 2
Ali vs Spinks 1
Foreman vs Lyle
Quarry vs Frazier 2
Foreman vs Ali
Foreman vs Young
Quarry vs Norton
Shavers vs Lyle
Shavers vs Williams

90s

Holyfield vs Bowe 1 2 3
Mercer vs Cooper
Cooper vs Moorer
Holyfield vs Cooper
Lewis vs Mercer
Tyson vs Douglas
Tyson vs Ruddock 1 2
Bowe vs Golota 1 and 2
Tua vs Ike
Holyfield vs Tyson 1 2
Holyfield vs Foreman


70s of course has many more known bouts but i mean for sheer action which era had best fights i just listed a few from each era just to give you an idea.