Okay, I read the entire thread and notice that YOU were about the only one who had much negative to say about the K&N filters. Most people who said anything negative seemed to refer back to your posts. In general, I'd say about 9 out of 10 people in that thread were happy with the K&N filters. I'm not slamming you here (but I'm sure you'll take it that way), I'm just saying that I don't believe they are as bad as you're telling people. Like others said, if they're so terrible, why would the be in business for so many years (since I was a kid!) and have sold so many millions of them? If you make garbage, people tend to tell friends and others, which in turn begins to lower sales. But if you stay in business by making and selling the same thing for as many years as K&N, you must be making an awesome product.
So, basically, I'm still going to install the K&N. I'll try it for awhile. If I notice any decrease in performance I'll take it out, but if I notice good things, it stays in. I guess the best way to learn is by experience. So I'll take the chance. But I'm guessing I'll be happy with the K&N.