Deepest Exhaust

Ok guys im new to this forum... but I have a question!
I have a 2003 GMC sierra.. Single cab with a 4.8L v8..

I am looking for the deepest, meanest sounding exhaust on the market today.. I have a flowmaster on there now and I just do not like it at all... So does anyone know what exhaust out there is Very deep and loud??

I put a Magnaflow system on my 2000 Sierra after removing a Flowmaster look-alike.
The Magnaflow has no baffles, so it is much more efficient. It's loud enough if you really accelerate, but also quiet enough to drive in residential areas. Sort of the best of both worlds.

i replaced the muffler on my dads truck with a pipe when he was gone. i loved the sound. but i had to put it back on because he came home.