F-Body Europe

Can anyone recomend a good exhaust system for my ride. I am currently using a FLOWMASTER THUNDER SERIES with dual Pace Setter tips. The exhaust sounds nice.... but I want it to sound better. The main reason I want to change it is since I have added my exhaust dump I have ZIP for ground clearence... especially since I will be putting a lowering kit on her. I was looking at replacing it with the 3" Cat Back HOOKER exhaust... unless someone has anything bad to say about them....... or the SLP LOUDMOUTH system.... Well thanks for all of the help!