I think I like the single tips best, However the dual tips look good also. Honestly Eric.....I think the sickest alternative would be to just get a Electric cutout dump You could just be idling silently and then open the cutout and Bwabwabwabwabwabwa! Music to your ears, but oh....wait here comes a cop to give you an exhaust ticket.......Um, *closes cutuout* officer I don't know what you are talking about......my car is stock