I had an awful time getting a set in Oct 2004 but I thought just like you do
that it was to tame. I had Corsa on my C5s and had no reason to change and opted
for the louder Sport. They were some of the first that they made and had an
oversized connections that was taken care of. They also tend to have a slight
rumble/drone in the cabin at idle that the  C5's did not. Not much different at
speed than stock but will talk to ya at WOT. I've put some of the other brands
on for club members but still like the Corsa, less obnoxious.

No problems at speed, I'm just now reaching 22,000 miles of cross country
driving in all sorts of heat, rain, snow, and just plain nice weather. I do wish
I'd have opened up the cross over pipe to stop some of the low speed popping
like I did on the C5s. For some reason they put a 5/8 hole in the crossover and
I opened it up to full pipe size, really eliminated the popping. As I remember
now I thought at the time it wasn't enough to do the C6 but now I think it will
get done. If you have a shop do it have them remover the crossover pipe, cut the
short pipe in half and cut out the 2 long pipes to full size and weld the cut
and reinstall, or pay Corsa $345 for a new one which adds 2 more joints.

If you have the new 6 speed automatic I'd hold off for a while, they are having
a fitment problem over the rear axel around the new rear end that gives you some
cabin noise. At the very least check with the builder and make sure you can get
it replaced if it is a problem.

'Any recommendations as to who might make a system, total or partial,
that might give me that low, sweet, rumble?
Thanks, brian'

REPLY: HI Brian. I have a C6 also.  Its too quiet for my liking.  I put
Ravin mufflers on my 1970 BB Vette and love the sound -- its a deep
rumble sound reminiscent of the 1960's. Im going to get them put on the
2006. Ive listened to all the popular exhausts on 2006's, and, they all
sound kind of hokey to me...even the Bullets . Sounds more like a high
revvin' lawnmower instead of that Big block sound. Thats my honest
opinion.

Dave

Vettes are an unusual bunch.... You really really really gotta be careful
in picking a loud exhaust for them. The tunnel and the rear storage area,
etc make them unusually prone to resonance and other sound anomalies...

I'd strongly recommend going to Vette gatherings and hear for yourself
what others
have done and have. I've been there done that with Vette exhaust. Sent a
couple back
and it was a hassle to get refunds and R&R the exhaust system.

The Mustang guys have it gravy in this area. Slap just about any brand
exhaust and it sounds great.
But not so with Vettes. Do your homework first!

Dynatech long tube headers w/hiflow cats, xpipe corsa touring exhaust.
You'll love this one.