A.E.M. is the only intake that I would buy. My old civic had one, and my new civic has one (c.a.i.). My buddy has a short ram A.E.M on his Accord it rocks! I've heard other intakes, D.C.'s DAC, Iceman, Injen, K&N and from my opinon A.E.M. has the best sound. As far as Hp gain, I'm banking that their all similar. I'm intrested in this V2 though it should be interesting.