Good summary SuperBusa and Gary. I agree that any filter specified for a given engine will work well enough.
LoneRanger: I'll be at the Subaru dealer on Monday. I'll pick up one of the new filters and introduce it to the band saw here at work. I want to see the insides in person. The media doesn't seem to be the "orange can of death" cheap stuff from what I can see in the pictures. I don't have a real issue with the cardboard end caps, they seem to work fine for short intervals. The biggest complaint with Fram is the ADBV. That's not an issue on a Subaru. I'll also measure the relief spring pressure if possible.
SuperBusa: The twin oil pumps on the Bonneville do indeed feed separate circuits. The HP pump draws through the filter and feeds the main oil galley and the output shaft of the transmission. The LPHV pump circulates unfiltered oil through cooling passages in the cylinders and head, and then through the oil cooler. It also lubes the clutch and input shaft. I would not be affected by filter resistance.
Ed