I didn't think he was the "right" partner for Petro prior to the trade, but there's little doubt at this point. Those two play incredible hockey together.
I think we all knew that he was a good puck mover, and that he played 'good' hockey in Calgary, but he was overpaid, overrated, and soft. The latter two, after getting a better sense of who he is, seem almost definitely a causation of personal drive. I'm sure he gave a great effort most nights in Calgary, but there has definitely been a shift in his determination even compared to last year. More emotion. More smiles. More shoves protecting the net. etc. etc.
He's been our best positional and net-front defender all year long. I hesitate saying he's best overall simply because Pietrangelo's work along the boards continues to be masterful.