nothing wrong with a Fram PH8a, just depends on where it was made. Downunder the factory that makes Fram, also makes Wix, Toyota Genuine, Repco & probably others. Same filters with different screen printing on the outside, all made for the Australasian market. I'm guessing its the same up in the US/Mexico, people get all brand happy, not realising the competition is made in the same factory. I have seen first hand how some filters differ with the relief, filter core etc... but it all comes down to where the internal parts are sourced from. But if you can fit an HP1, you have stepped up on the filter construction quality.