The exhaust is about the only thing banks makes that is kinda reasonable pricewise. They sound good too.
Now, on my dad's 03 7.3 we went with a Magnaflow Dual exhaust and it sounds so F in good!!!!! Nice, deep, powerful sound. In the cab, minimal change. I would try and get a sound clip, but it will never sound right. I think you would be more than pleased with the Magnaflow kit!