Im using an AEM DryFlow filter, and have been for quite a while now. Ive had no adverse affects. Its been through rain, snow, and everything else you could think.
Even earlier today I was hosing off underhood, and hit the filter itself with a blast for quite some time, then started the car a few minutes later and it ran like a champ. Ive never had any water issues with the filter.
I dont know how it flows compared to a K&N, but according to their testing, they do filter better than K&N. Which is important to me, because I live in a very dusty area.
2000 Oldsmobile Intrigue 3.5L DOHC V6 15x,xxx miles "The Forgotten W-Body"
shaved badges, Eclipse HU, Pioneer TS-A1370R'*, Pioneer TS-A6971R'*, 20% tint, cleared corners, Silverstar Hi'*, 9005 Low'*
Fenderwell Intake, Hi-Flow Cat, U-bend delete, GMPP Handling Kit, MOOG endlinks, and 12-inch front rotors
1996 Bonneville SE RIP 157,751 miles, totaled 8/29/05