Cat-back Sounds

I've done a search and could not find a direct and clear answer to this. Which cat-back is louder GMMG, Corsa, or B&B? Also how would they rank from loudest to most quiet and which one has the most drone?

B$B
gmmg
corsa

loudest to quitest

GMMG, B&B, Corsa

I have heard all 3......GMMG is clearly the loudest. I have the corsa system, and I love it. I think it will sound perfect with LT headers. But the GMMG may be a bit overwelming with LTs

Forgot to mention
Corsa also has the least drone. I would assume the GMMG has the most

Ok, get some facts straight people.

GMMG is easily louder throughout the entire rpm range than those other two exhaust but the beauty about this system is that it has no, yes I said NO drone. I first had it on my 2000 A4 Z28 and have now re-installed it on my 2002 M6 Z28. I personally haven't heard a better muscle-car sounding cat-back yet for the LS1's. B&B and Corsa are nice looking, but they are too quiet and just don't have the kind of tone I like.

Best bet is to try and hear these systems in person before you purchase one.

Mike

Thats why I said I assume.....