What is the best air filter for my BMW E46?

I hear a lot that K%26amp;N lets a lot of small particles and debre into your system. I was wondering if anyone had a brand that is highly recommended or they have positive personal experience with.What is the best air filter for my BMW E46?there are different brands like airhog, hastings, motorcraft for airfilter with nice specification which works properly. if you want to buy airfilter you can visit http://www.theautopartsshop.com/parts/ai鈥?/a>What is the best air filter for my BMW E46?Try K%26amp;N if you're concerned. I've used Fram ones in the past as well and they work nicely as well.