Pretty darned good stuff here, even in the comments section.
Of note: "Since his first full season in the big leagues, he has easily been the best catcher in baseball. Between 2005 and 2010, he compiled a 32.7 WAR — Victor Martinez finished a distant second with 22.2 WAR."
"There’s one thing that immediately stands out when looking at the data — and it shouldn’t be surprising: Mauer is a phenomenal hitter. Despite the fact that he’s not perceived as a strong power hitter — his 2009 season excepted — Mauer is far better than his competition in slugging percentage and in OPS. "