Link to Engine Masters air filter shootout season 2 episode 27:
https://www.dailymotion.com/video/x693421
14 minutes.
Project Farm does a test where in his clear test rig you can see the particulate going right through the K&N filter as he introduces it into the air stream. There's no free lunch, the low restriction of a gauze filter does not filter out fine particulate. He did 0-60 tests, the K&N won by .1 seconds over the best performing OEM paper filter.
If you care to look for testing there is plenty of it out there, the gauze filters never equal OEM style filters in particulate removal. In fact they test much worse in oil analysis tests due to solids passed into the oil than OEM style filters test. When the oil analysis shows much more solids passed into the oil with a gauze filter in multiple tests over a OEM style filter. I don't want one on anything I care about. Your engine, and your choice.
The OEM Ram Air air filter parts were shaped with flow in mind, the factory engineers were on the ball when they designed their tin parts for their high performance cars. The aftermarket took decades to get the smooth contours that the OEM stuff had in the 60s and 70s.
FWIW, in multiple tests I watched, Purolator One, and Wix were among the best in filtration at a reasonable flow rate.