heres a good article:
http://www.corolland.com/oil-filters.html
good note about the Fram:
"This filter appears to be the lowest quality of the group. But it is one of the most expensive of the group too, I guess marketing costs are pretty high here. The cardboard end-caps for the filter element, the cheap plastic by-pass valve and the flimsy anti-drainback valve will make me stay away from this filter.
Any of these filters would work for me except for the Fram ExtraGuard, I just don't care for it as they seem to have made to many compromises to lower manufacturing costs (read questionable quality)."