F-Body Exhaust. Chambered, Y-pipe, True-Duals: Which Do You Prefer and Why?

It’s amazing how different exhaust systems can completely alter the sound of a car. Whether it’s the stock manifolds vs. longtubes, a chambered exhaust vs. a straight-through muffler or a Y-pipe vs. a true-dual setup, you can significantly change the sound of your LS-vehicle with different exhaust systems.
Here’s a little video comparing some lightly modded 4th Gen. F-bodies with different exhaust systems.

What exhaust setup is on your LS-vehicle and why?