I agree that anything "above" OEM paper filters is overkill and more expensive...But I did the K&N because It simplifies the process for me.

I don't have to order a filter when it's time to clean my K&N. I've got the kit to clean and refresh the K&N whenever it's time and the cost of the K&N and Kit isn't that much more over the life of the bike.

Also, others have said the K&N didn't fit correctly around the edges of the gasket. I'd say my K&N is difficult because it's just a "smidge" too big, so It fits VERY tightly sealed with all the bolts on the cover.