Thanks for that link, Pete. I had read that one a couple years ago and it seems to be a well researched oil filter study. I cut open the PH8A filter (Canadian made) that came off the engine today, and it was similar to the one in the article but had 40 pleats instead of 34.
The author of the study said, "Years ago Fram was a quality filter manufacturer. Now their standard filter (the radioactive-orange cans) is one of the worst out there."
Which implies that my old PH8s are better than the new ones.