[Powerubi Wacon]

The only advantages, besides spending more money, to buying a K&N are; higher burst pressure, higher flow, and that nut welded on the end.
You can buy a Wix Racing filter, for less money than a K&N, with the same features listed above, minus the nut on the end. The standard Wix and the Wix Racing filter will out filter the K&N. The whole reason for having filters!