Try one of the corvette forums.
I'm on a Durango and a Bronco forum. Both of them have a sticky post with exhaust vids. Be able to see what everyone likes or dislikes.
Here's one I found.
http://forums.corvetteforum.com/c4-general-discussion/1503446-exhaust-sound-clips.html
I've got a Flowmaster on the Bronco. Sounds good, but if ya have to ride in it very long it gets on my nerves. The guys there say a Magnaflow isn't as bad.
Think about how it's gonna sound "inside" the vehicle. Spring is almost here. Want a nice sound, but ya want to enjoy the ride too.
Maybe I'm just getting old...