I have dynomax ST on both of my cars, SB and BB. They are great, imo. Plenty quiet when cruisng and sound great when I put my foot into it. I have never heard a car with flowmasters on it that I liked.

My wife and I cruise many hours in our cars. They have been tested a lot. My complete exhaust is TTI, EVERYWHERE I go people complaint me about the sound of my cars, people love it. Thumbs up at almost every traffic light. Get the super turbos if you go with TTI, there is no better sounding exhaust.