I personally love the sound of a 1st gen crushed bov. I have the 1st gen crushed bov. I first bought a Greddy Type S it was actually quiet on my car. But because it broke i was forced to sell it and buy a knew bov. I Did however keep the hard piping from the greddy type s and i just drilled holes to flange to 1st gen. As of right now im pushing 21 psi when racing, holds very nicely. I would say 1st gen just because of the significant price difference. Each of these bov's hold about the same amnt of boost. Offer him 25 for the 1st gen unless its crushed then definately buy it for 30.