Yeah its expensive..but you know what? Its without a doubt the best sounding exhaust I've heard on a V6. Nice low rumble and loud on WOT. Much better than the MAC's I had.
You know why it sounds better right? Because there is only one muffler. When the flow gets more restricted, it makes a lower tone. Hence, straight flowing mufflers with no cats sounds like babies screaming. It would make since if you took away a muffler, you'd gain a little more sound quality. (this only works on our v6's) some cars sounds better with more airflow. It depends on the firing order and engine displacement among many other variables.
sound and performance are two things that both come out of an exhaust. it's really a tradeoff. when you go down to a single restrictive pipe, you lose some stuff. however you get a better sound. i chose to go with a true dual system because i honestly dont care as much about sound as i do about performance.