new mufflers...opinion please

I have Classic Chambered Powersticks on my Duster, and I'm going to put one on my Jeep when I do the exhaust. Check them out here: http://www.classicchambered.com/

They have that raspy open sound like Flowmasters but with a smoother, less "metallic" sound at lower speeds. And they're pretty damn loud when you get on the throttle, some resonance at low speeds but highway cruising is quiet.