The best time would have been in 04 right after Vitor beat Couture, this was before Wanderlei vs Hunt so he was very near his prime at this time and Vitor was as well.
"All I guarantee is Violence" Wanderlei Silva
HW Fedor, Mir, Cormier
LHW Shogun, T. Silva
MW Wanderlei, Vitor, Weidman
WW Diaz, Swick, Kampmann
LW Gomi, Pettis, Alverez, Khabib N.