Not as good as MSD, i've sold 75 to a 100 PC HEI's in the last 5 yrs. and only had to replace 4 units. I'm sure RLMotorsports (Ron) has sold hundreds of them, i don't know what his rejection percentage is.
Bottom line if it's race motor MSD hands down, if it's a street motor PC works fine.
JMO
Zip.