a filter is a filter. is stops debris from entering your engine. like bugs and other crap that might get sucked in. they both do the same job of filtering air, one flows better then the other. if you think the difference of filtering out microscopic stuff is really a big deal then stick with a cheap paper filter. Ive run intakes with kn, or kn style filters for over ten years on every single vehicle Ive owned and never once have a i had a issue at all. it a matter of preference thats it. been talked about on boards as long as Ive been online