Which is better, a K&N filter or the KKM intake system. I trust K&M and it has improved my civic, but I'm not too sure about KKM, is it reliable or any good?

99 Ford Contour SE
2 12" kenwood subs,1000W kenwood amp, Pioneer Head dehp7300, RF 5" Components (f), pioneer 6x8, Dynamat, K&N filter, aftermarket foglamps, side markers