I'm gonna go with the Fram Ultra, they're the most affordable filter in the high end class, only cost $9 or $7-8 on sale sometimes, Rural King has had them on sale for $8 for the last several months, even have the shorter 3506 that can be used on my Blazer for only $7 although I just bought the 9837 because I prefer the bigger filter for only a buck more. Can't beat that for a wire backed dual layer full synthetic media filter.