Have to go with Holyfield.Tysons handspeed was superb,tight package and was a formidable force coming forward...when things were going his way.They were set to meet in 1990,then Douglas layed Mike out.Again in 1991,then a busted rib (courtesy of sparring Oliver McCall I believe?) took Mike out of that one.Holyfield would have boxed more back then but I still think he would have beaten Mike.Had more intangibles.....mentally sound,footwork,stamina,combination punching,etc.He had his number,I think Tyson realized that in the rematch and resorted to going rabid dog on Holyfield.