I was referring to the K&N that is a direct replacement
for the stock filter, inside the stock airbox, which is what Hoss asked about. AFAIK
so far, the only two choices for the stock filter inside the stock airbox is a stock replacement (like dutter asked for), or the K&N direct replacement. (third choice would be some home-made **** like my PO did)
An ear shave gets rid of the airboxs, and air tubes, and then uses a pod filter directly on each carb's inlet, and the pods can be had by a variety of makers (including K&N) depending on the size you're after and what will fit and flow.
So a person can use K&N air filters, if they feel it's the better way to go, or if they just want to, (whatever reason) without actually doing an earshave.
Personally, I don't feel a double the price increase is justified by whatever little improvements might be had by switching. Again, based solely on simply changing the filter itself, inside of the airbox. I think Kawi filters run around $20 a piece, and the K&N's come in one box of two filters for $80-90.