Not all after market filters are cheap evil filters. Some are made to exceed OEM requirements. The K & N filter I'm using is one such. My filter alone was about $65. It is reusable, and is a "wet" filter so it does a better job of cleaning the air than paper OEM filters. It also has much more surface area so it is less restrictive.Here's a review http://www.autoanything.com/air-filters/60A2090A0A0.aspx
...BTW your Bieber avatar is awesome.-Malone