Exhaust preferences?

[76sierraclassic]

I know this subject has been talked about a lot, and I know that the answer to this question is somewhat subjective, but I'd like to know what exhaust systems you guys like to run and why.

I currently have a stock 350 in my 76 LWB with true dual exhaust, no cats, Cherrybomb glasspacks, and medium sized chrome tips turned out behind the rear wheels (stock location). It is somewhat loud, but the sound is not as deep and mellow as I think I want. I'm debating on whether or not to change over to Flowmaster 40 Series either Original or Deltaflows, but I'm just not sure whether it's worth it or not, or how much sound will be in the cab with me. I want to be able to hear it some, especially when I get on it, but I also want to be able to hear the radio.

Any recommendations or other info would be appreciated.

Thanks!!!!

Mike