I'll take a free one! what these tests don't tell you is how the maintenace was applied to the K&N filter. I already said that I made an oil bath filter and put my K&N into that. If you think you can just spray on a bit of oil and go for 50,000 miles your mistaken! The Filter needs to be oiled FREQUENTLY! Most air filter housings have a dish about 1/2 inch or more and it's not hard to pour some Marvel oil in there, which is very particulaphyllic by the way, and clear it out periodically. The K&N filter is sitting in a pool of oil and the air passing through it is blowing bubbles in the filter oil. Ever seen a desert dust storm? My secondary wick sponge filter after the K&N has ZERO dirt in it after a dust storm with 30 MPH driving Speeds and visibility of 40 feet or less! Your test won't show that either! Get creative and modify! You can't just plug statistics into a test program and expect perfect results. the paper filter is a TOTALLY different animal than an oil wick or oil bath one and if you think these results matter after applying one coat of oil and testing it against the life of the paper filter to see who comes out on top is ridiculous because they are not designed to operate the same. EVEn K&N specifies and points out that 50,000 between filter maintenace is under the most IDEAL conditions. Don't get a K&N because you want more power at your right foot, get one because they can be modified to surpass any other filter at getting the dirt out!