Many many threads on the Corsa Sport exhaust. Never heard any complaints about the sound. It is well known for NO DRONE in the cab but a deep throaty sound on acceleration. It is quiet at cruise so you can carry on a conversation or listen to your stereo. IT has a lifetime warranty and is an easy install.
I had one on my 2004 and one now on my 2008 and would buy it again anytime.
(When the Flowmasters rust out on my 1947 Chevy I hope to put Corsa Sport on it too.)