Buy or sell: Brian McCann is the best hitting catcher in baseball?

And I'm not just when Mauer and Posey are out, I'm saying when everyone is healthy. I'll buy, because McCann has been remarkably consistant over the past six years. All Mauer can do is hit for average; McCann can hit for average and power. Posey has only been in the league for two years, and even then, McCann is still the better hitter, at least for now. He is also better than Victor Martinez, Soto, Molina, Ruiz, or any other active catcher you could possibly think of.