I've got the Bassani race axle-back, and my good friend has the magnaflow comp cat-back. He also has ARH long tubes (1-7/8 primaries) w/ o/r x-pipe. In comparison, the Bassani is much deeper, but took ~1000 miles for them to really open up. They were pretty quiet right after install (this is typical of most glass pack style mufflers. I'm pretty sure they are broken in now, and have a fairly loud and deep tone through 4k RPM, after that, the coyote just screams
For the magnaflow comp's, with just the cat-backs & stock every thing else, they sounded pretty good, but were higher pitched, and louder than the Bassani's at first. Then we added the ARH long tubes & o/r x-pipe, and the exhaust note got really high pitched, and really loud. Also, it cackles A LOT on decel. Now, I'm a big fan of cackle, but his set-up has way too much for me. To give you an idea, when he stomps on it, it sounds like a medium displacement, high revving race car, not a low-end torque, deep exhaust muscle car.
I've got a really good feeling that once I get long tubes, o/r x-pipe or h-pipe (cant decide), and full mid pipes, the Bassani's will be much louder while keeping the deep note.
Also, I've heard the magnaflow comp axlebacks on another '11 5.0L, and it sounded great as well, loud and deep, but if you're planning on getting axle backs now, and then expanding to the rest of the exhaust later, I recomment the Bassani race axlebacks. I love my exhaust note, and it sounds like we've got the same interests in sound. Just know that they will be kinda quiet for the first couple hundred miles, but they keep getting louder and louder every time you drive it
I think I've got everything in here lol, but feel free to PM me if you have more Q's.