I didn't have the MBRP but I have a Flowmaster Super 44 and love it
It has plenty of rumble and it's loud when I rev the engine but the drone isn't too bad at all, especially with music on
It was also very easy to install
I wouldn't want anything else to be honest, it's a slightly more tame sound compared to having no muffler but still sounds great for being a v6
BUT, if you don't like loud then you definitely wouldn't like the 44
If I was in your situation I'd get either the Super 40 or maybe even the 50 series
Great price for either one and they'll give you a nice sound without being overly loud when you don't want it to be