I'm going to keep the K&N for right now. I have the money for a V2 but the K&N seems to be performing pretty well.
When I bought my RSX-S it already had the intake so I do not know how my car performs with a stock intake. So I have no way to compare unless I drive over a 100 miles to the nearest Acura dealer to test drive one or find a local used one.
If some of the dyno charts I have seen for the K&N are correct then I should be seeing up to 12 peak horse power. I can live with that.

All I know is that my car is sure a blast to drive. I drive almost 80 miles to and from work each day on windy country roads. I enjoy every minute of it even though I have been driving the same road for 19 years.