I use ProSelect air and oil filters in my truck and my girlfriend's car. As far as I am concerned they are the very best filter in their price range. They are made by Wix with very solid high quality construction. They have a very good balance of flow and filtration. I don't run them past 3,000 miles, but I follow a very strict 3,000 mile OCI in both cars anyway. I can not see spending 9 or 10 bucks on an oil filter. ProSelect air filters are also made by Wix and they perform just as well as Purolator and cost the same or less.
Wix makes the ProSelect filters to Napa's specs. Napa won't put its good name on an inferior product. If you ask me, I think ProSelect oil filters are much better than Purolator Premium now. I read that Purolator has had some quality issues lately.