Motopycho87 you seem to have found a very polarizing topic. I've used K&N filters in the past and never had any problems. The bikes I used them on were fairly diverse, '76 Can Am flat tracker, '80 Yam. TT 250, '84 Hon. XR 350, '78 Suz. 100 (daughter's bike). Some were run in very wet/muddy conditions others (Can Am) were never run in anything even damp. They are still the filter of choice for most of the dirt track crowd and I know they will not stop water at all. Some foam filters are pretty good at this although my feeling is the filter oil has more effect than the brand of filter. Roadrace or dirt track, K&Ns' seem to be pretty good and in all fairness I've always stuck w/foam filters on my GG300, '92 Husky 250, '04 KDX, and '90 Yam. 180. If you've been using it with good success I wouldn't switch because someone else doesn't like them. Ask some other people who have the exact same bike as you and ride in the same conditions. You'll always find a few "forceful opinions" but use what works for you. Jim.