I use low priced (non E-core applications) Champ filters for extended drains under several different brand names (SuperTech, STP, AC/Delco) and am wondering if there are meaningful differences among them--it would only be in the filter media as they're all constructed the same. (I've cut a ton of 'em open over the years) Since they're all relatively inexpenseive, I'd like to be using the best one if there are differences in the media quality. I'm more concerned with durability than efficiency due to extended drains
. Filter Guy, are you lurking? Can you shed any light? Thanks!