Interesting air filter tests

Excellent @DrEamer , i was gonna mention that test, but you posted it! It does an great job of testing the air cleaner housing as well as the element.
For reference, i bought a K&N for my runner years ago. The throwaway fram was $35, the lifetime K&N was $50. No brainer! (A 14x3 round fram was about five bucks at the time.) I have had no complaints with the K&N, but i use up my stock of paper filters on everything else.
The correct "throwaway fram" repop is now $125.
Edit: that air filter test was one of my two favorite engine masters episodes!