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

K&N reusable, oiled cotton filters are marketed for higher airflow and a lifetime service interval, and they carry strong verified-purchase ratings. However, paper filters like the Purolator and Allstar options cost a fraction as much and are simpler to swap. There is no independent filtration-efficiency lab data in our signal set to settle the airflow-versus-filtration debate, so choose based on whether you value washable longevity or low upfront cost and disposable convenience.