At the risk of drawing mass ilk, IMHO, a 4 cylinder will never sound "good", regardless of any exhaust/non-exhaust. It's simply a matter of how much less irritating you can make it, ie: more quiet. I'd gladly trade a few HP for some decent sound control. I haven't heard anything yet for the SVTF that impresses me. Until I do, I will live with the borderline obnoxious stock enhaust. As Madmax mentioned, at least the tip is in perfect placement, and nicely styled.
~Dave