MBRP is the way to go!
I was stuck between the Flowmaster outlaw axle back and MBRP Cat back for a while... After months of debating and listening to a ton of sound clips on Youtube, I decided to go with the MBRP cat back race series exhaust. It's made of 409 Stainless Steel and normally runs about $699.99 - a little expensive, but it sounded amazing in all the sound clips! Really deep without being over the top and bottle-rocket like. I haven't installed mine yet, but will be doing so in about a week. I'll update this post with the YT link once it's installed.