My main catcher, who is in the lineup for his bat, has a PC of 43. His C ERA this past season, 4.16.
His backup caught 1/5 the innings, and is in the lineup because he's cheap, has a PC of 57. His C ERA was 5.12.
No other big league catcher is in my system, so I'm going to keep rolling with the 43 guy unless he collapses and takes the staff with him.