I have been running a K&N oil filter on my Power Stroke since I got it in Novemer 04. Can anyone give me an opinion on the K&N's? Is there a better filter as far as testing shows. I am currently paying right over $12.00 for the filter, which I figured was a pretty good price for a K&N. I have to admit that I am using this filter for the name only. I figured if it said K&N, it was probably the best. Please give me some good layman's info as to why it is good or why a different brand is better for the money.