Foam does filter a little better (hence why it flows considerably less - like 50% less - no lie!)
However I have been running a KKM for over a year and my oil samples show almost zero traces of silicon. I am lower then half the normal amount found using paper air filtration. I find those hard facts quite acceptable.
Plus I out flow the stock paper filter media. Something you can not say...
All sizes being equal paper out flows the best foam by over 12% The stock SVT filter area is quite significant. What's your effective filter area?
Again cold hard facts, not someone trying to sell you something...
