JDS and Hendricks come to mind first. The ridiculous list of contenders they had to go through, who can really compare?
JDS:
Werdum
Struve
Cro Cop
Gilbert Yvel
Gonzaga
Roy Nelson
Shane Carwin
Hendricks:
Jon Fitch
Josh Koscheck
Martin Kampmann
Carlos Condit
JDS:
Werdum
Struve
Cro Cop
Gilbert Yvel
Gonzaga
Roy Nelson
Shane Carwin
Hendricks:
Jon Fitch
Josh Koscheck
Martin Kampmann
Carlos Condit