I've got a '98 and a '10 sportsman 500 (HO) and am wondering what type of air filter everyone likes best? I drive in central texas (johnson city), where its usually either hot and dusty (really dusty) or wet and muddy. OEM, something that looks like OEM or one of those oil up type (uni or k&n etc.) and the reasoning. I just saw the videos on a uni, looks like lots of work to clean and oil, but I guess you save some $$$ over the long haul? assuming the foam doesnt fall apart too soon i guess. old timer here would seem to prefer a disposable filter but they sure are pricey + the outer sleeve cost some bucks too. :hmmm: lets see what ya'll think...