In terms of today's NBA, there are very few centers who are better than Perk when considering both ends of the court. Dwight and Yao, certainly. Tim Duncan, if he's considered a center. Then, there's a long list of guys who are debatable. Nobody else is clearly better, though, in my opinion.
(Pau Gasol is probably the closest to being "clearly better", if he's a center. That's only if you weigh offense over defense, though.)