I really hope you haven't stopped using your K&N because of what you are reading only. Many times, lab testing can't reproduce actual conditions. As I have said in other threads about this, I know from real world experience what K&N filters do. Based on that I will be a K&N user as long as I can buy them.
You are certainly free to form your own opinion and use whatever filter you want, I just hope you and the others on here that are getting concerned with these "lab tests" aren't letting that cloud their judgement of the overall picture.
And no, I don't work for K&N. I just have first hand experience that is not at all like they want you to believe in those tests.