Well im not rich, quite the opposite, so all i have is a 2.5" o/r prochamber and dynomax super turbo's welded in with a 2.5" pipe from the midpipe and then 2.5" out to the tips, instead of getting bigger tips i just got the guy to move them out 1" each so they stick out.
Personally i love the sound, although inside the car it does sound a little tinny, so roll down your windows

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I've always thought it was extremely quiet but apparently not.
i hadn't got too many genuine opinions from other people until this summer in a parkade, my rich a-hole friend who has a corvette was riding with me, he asked me to rev it. He literally jumped about 4 inches and said quote "Holy ****ing **** that sounds like a ****ing race car! Thats insane man!"
And possibly my greatest compliment to date... My cousin has a cammed LT1 95 T/A thats had about 8 different exhaust set-ups on it now. He absolutely loves the way my car sounds and has gotten me to rev it at his exhaust shop of choice and told the guy he wanted that sound replicated, only louder. (he likes being heard 3 miles away)
Another experiance i had just recently, i took the car out after the first snowfall melted (they dont salt until the big snowfall so no worries) and my girlfriend told me to 'do that thing that makes her stop breathing'. (drive it in first gear to about 15mph and then mash the gas pedal). Well there was this mid 30 year old walking with his wife about 2 blocks away, i did this to the top of first and then let the revs drop in first gear (possibly my favorite sound btw. very loud), anywho, this guys wife was half a block ahead of him and he was standing there in shock, when i went by he gave me two thumbs up and then turned around and watched me drive away for the next block and a half until i went around the curve and i couldn't see him anymore... i wish i could have gotten a video of it. Best and funniest sight ever.
Prochamber is also extremely easy to install but is a pita to get to seal up and you'll often get exhaust leaks, i have a minor one i think, although last time i had it running i couldn't find it or hear it so perhaps it fixed itself or i was just on crack before, i only thought it had a leak because of the sound inside of the car and the smell of the exhaust inside the car.... but i later found out those are both just side affects of an o/r pipe/the prochamber.