Are K&N reusable air filters actually better than paper filters?

The consensus across the reviewers we read is mixed. r/cars cites independent testing showing K&N efficiency in the 96–99% range, and many owners report smoother idle and slightly better throttle response. However, r/MechanicAdvice threads repeatedly warn that K&N filters let through more dust than paper OEM filters and that the oil on the media can foul mass airflow sensors. For a stock daily driver, several mechanics quoted in the data say the gains are minimal.