so far in the UFC, I would have to say
Tito Ortiz Vs. Chuck Liddell was the best main event so far.
so far in PRIDE, I would have to say
Wanderlei Silva Vs. Quinton Jackson was the best main event so far.
Silva v. Sakuraba - Couture v. Chuck
Mo V Coleman
Tito V F Shamrock
Chuck V Tito
Nog V Fedor
tito vs chuck
Nog vs Fedor
John Hess vs. Andy Anderson
In terms of excitement I find it hard to go past Ken V Tito, with Silva v Rampage a clse 2nd.
As far as good matchups. Couture v Rizzo 1 was tidy.
In terms of drama/buildup/etc, I'd go with Tito/Chuck, but Chuck/Randy was a much better fight in my opinion.
vitor/couture 2
shammy/severn 2
severn/tank
oleg/ruas