napa gold wich is wix, car quest blue wich is wix and wix, wichever one is cheaper when i need one, all 3 are the same filter. Main reason i like wix the best is cause they have the best anti drain back valve and set up of all the filters i have cut open.
I normally like to buy the car quest blue filters the most because they are white and its easy to tell if any oil is leaking at the filter. But i have cut open a napa gold, and a car quest blue and a name brand wix and all 3 are identical, only difference is the color and the stickers on the filter.