Avoid the oil-based air filters. They'll foul your MAF and that will cost you $$$.
The front AC pollen filter is pricey. Get the cheaper of the two available.
I get my filters from Sunset Porsche in Oregon. Quite reasonable.
And texomawaves, you'd do well to buy a factory user's manual for your car or a Bentley repair manual, both of which outline this and many other important things about your newish car.
Enjoy your ride!
