While there have been many posts on oil filters, one caught my eye a long time ago when I came here and actually saw this polling section on Oil Flters...here is a write up from Mark Lawrence when I first started changing oil on my Harley and visited HD Talking about 3 years ago...and yes I still use the H-D / Champion one in chrome :s
http://motorcycleinfo.calsci.com/Filters.html#OilFilters
http://motorcycleinfo.calsci.com/Filters.html#OilFilters