Don't get me wrong here zoomers are awesome with state of the art fit and finish but in my opinion it does not have that muscle car voice. Corsa and Zoomers are very close in sound in my opinion once again. While in the throttle heavy at 3500 rpm Zoomers sounds loud but not throaty like Borla or Flowmasters. Zoomers are louder then both flowmasters and borla with a more high pitch reviving sound but Flowmasters and Borla achieve that true muscle car tone to perfection, not as loud but far better tone to me.
Tuck, this is perfect proof how different we hear and respond to sound. I would swear you have Zoomer and Corsa confused with each other, but I'm sure you don't and it's just the way our ears respond to different frequencies...For me personally Corsa and Zoomers are at opposite ends of the spectrum. Corsa being high-pitched (which i dont like myself, although great quality product and some love the sound) and Zoomers being the deepest, lowest, throatiest, rumbliest of the bunch with Solo, Flowmaster, MBRP, and Borla being somewhere in the middle which is also a very nice sound, tone. I agree Zoomers are louder, but mostly they are Fatter sounding due to the deep deep bass tone they produce. They are not obnoxiously loud by any means IMO.
Out of all the clips out there, I think this one most accurately depicts the sound of Borla. It's very deep tone, and has an awesome rumble. Those two qualities I think should be at the top of the list for a car like ours. You can hear the rumble good at the beginning when he gets off the gas after a rev. Not a very loud exhaust, but the tone of the sound is perfect. A Challenger that is too loud just attracts more unwanted attention such as the po-po and idiots in ricers and Mustangs wanting to race you.
YouTube - Dodge Challenger SRT8 Borla Exhaust
I agree that Flowmaster is also an awesome sound, and is so good that people use them for all sorts of cars. They do sound best on a V8.

imp:
That vid sounds pretty good. Here's one I shot of my Zoomers. It is nowhere near as comprehensive as the Borla vid, but I think it highlights how much deeper toned the Zoomers are. They are louder, but again not obnoxiously loud. They have a mellow deep tone. The sound they make at idle is by far my favorite. Under load they only get sweeter and I only get thumbs up from people passing by which show me they are not TOO loud. I've also had my wife drive around while I listened from the sidewalk just to check and they were very easy to listen to at any normal speed. ANY car, even a Volvo, at WOT is going to get negative attention on neighborhood streets.
Anyone who listens to these clips should listen with earphones as it will do a better job of capturing the deeper tones of both the Borla and Zoomers that you would hear in person...
Amen to that brother!
For the op, here's a link to a couple comparrisons and my review...
Zoomers vs Solo Performance Mach X-3 vs Corsa Extreme - Lx Forums | Dodge Charger Challenger Magnum | SRT8 | Chrysler 300 Forum
Challenger Exhaust Guide | Challenger Nut
Here's my review...
http://www.challengertalk.com/forums/f175/life-zoomers-58478/
I looked pretty hard before choosing Zoomers and I've never been happier. Never found ANYONE who had them on their car that did not love them or replaced them with a different system.