Best glasspack to run?

Classic Chambered PowerSticks beat any glasspacks in the sound department IMO and have no fiberglass in them, just louvers and the outer shell is "pinched" in 4-5 spots to create chambers. I've had them on my Duster since 2010 and wouldn't change them for anything. Loud and rowdy on the outside of the car but minimal drone on the inside and no popping/afterfiring to speak of.

Classic Chambered Exhaust Inc. - Home Page