Thanks, GB. I'm going to order the air & cabin filters tomorrow. I just don't feel comfortable pulling out the OEM filter and reinstalling the K&N, and this Amsoil filter looks very promising. I can handle blowing out the crud every year, rather than deal with oil.
EDIT: I decided to only order the air filter. I searched for other vendors, but ultimately had no choice but to order it from them directly. A tad expensive, but if it lasts as long as they claim (and filters as well as they claim), it will be a cheap purchase.
I just ordered some other non-OEM cabin filters from another supplier for about $14. The cabin filters on the Amsoil site are essentially the same as OEM, but quite a bit more expensive.