Hey Jeff, just saw your comment on YouTube and so far I am loving it. It has a nice start up tone (especially when cold) and idle is lopey but not obnoxious. If you look at my build thread you can see how he set it up. He suggested I remove everything except the third cat. If the flapper was left in, I'm sure the chopper noise would be eliminated but I'm glad I took it all off. If you are watching the DIC and see it switch to V4, you will notice. Otherwise, normal driving you would probably not even hear it.
I've definitely got some miles on it now and so far so good. The sound has increased over time in a good way. I have used Aero mufflers on previous trucks and I really don't think you can beat them for the price. I live in a complex and I didn't want it to be ridiculous loud but sometimes I wish it was a tad louder. My '05 1500 had an Aero that was side dumped, so if you are looking for a little more noise, I would do that. To me, they are the perfect muffler. I searched for weeks and listened to every and I mean literally EVERY, exhaust video I could find before I decided to stick with Aero again. I think Corsa would have been my next choice but I wasn't going to spend $900+ and then have to install it myself. Honestly, these trucks aren't very loud even with a straight pipe and I didn't want any cackling or backfire. My 51yo dad thinks the exhaust is a tad loud and said he would probably do the 3030XL (resonated version) on his '15 GMC 1500 but he is old haha.
These two videos (yes I know it's a Ford) sound identical to my truck. A V8 is a V8, both have 8 cylinders so they sound really really similar especially since they are being fed to the same muffler.
Another member here has done us all a great big favor by testing multiple mufflers on his truck. I used his videos as well to make my decision. He has tried many different setups including a Jones 3030 (same as an Aero).
https://www.youtube.com/channel/UCNVl7_YwiUhrpm053nnV4BQ
Like I said if I do change to anything, it will be to a Corsa because I wouldn't mind a little extra noise. All in all, if you are looking for some good 'clean' noise, not overly obnoxious loud, cost effective, clean looking (loved the bright finish); Aero will be up your ally.