I was a tough critic of Perk last season, he was wildly inconsistent. As the season went on he improved bit by bit though, and during the playoffs he really turned the corner. He's playing even better this season. His defense is better, and most importanly his offensive moves when he catches the ball. He rarely is putting the ball on the floor like he used to. When he does it's usually to get himself in better position, instead of doing it for the sake of doing it like he used to. Also, he's no longer bringing the ball down in order to go up... he's consistantly catching the ball and going up quickly putting the ball against the glass. That's his biggest improvement and the thing I'm liking about him the most at the moment. No longer is he wasting good opportunities left and right like he did last season.
He's also shooting free-throws well, so he isn't a liability finishing up games.