There are several threads on the different brands of exhaust. Look at the thread "Exhaust sounds". I believe there are still some links to video clips. There are also a couple of threads that refer to the Tsudo Exhaust. A few things to consider: How easy will it be to install? Are there any extra modifications necessary to make it fit? How will it look on the car?
Bottom line: What do you like?
Good luck! Post a picture when you get it installed.
2007 LT 2.2
GMPP Air Intake * GMPP Extrude Honed Manifold * GMPP Cat-Back Performance Exhaust * Vibrant D/P * Jet Stage 2 Module
MOBIL 1 Synthetic Oil * DC Sport Strut Tower Brace * Color Matched Mirror Covers * EuroAntenna * 30-15 3M FX Tinting
Bridgestone Potenza Pole Position RE960AS on Premium Wheels
2.4 Intake Manifold Conversion * 2.4 TB * TUNE