As for the oil "problem" on the K & N filter: I have been running a panel filter for 60,000 plus miles and NEVER had a problem. When I clean the filter, I just spray the oil on in light coats and try not to over do it.
I have put too much oil on a few times and the solution is to get compressed air and use it on the filter. It ends up blowing the oil from the metal screen to the filtering media underneath. Works like a charm.
OP, it's interesting that the panel filter is supposed to flow more air. There was a guy on here awhile back who fabbed up a stock intake where the panel filter is exposed directly to the air (took out the piping feeding it). I wonder how a set up like that would measure out with flow rates.....
Slide It Sideways