I'm hoping to get some feedback on the Greddy BOV's. I had a Type S on my boosted Prelude and S2000, and was thinking about getting another one, but noticed that Greddy came out with a Type RS. Does this perform any better or sound any different? Any pros/cons with the RS. Also, Ebay has knock-off versions of these BOV's for sale. Does anyone have experience with these? Any feedback would be great!

Jason