which mufflers?

[my 85 gmc]

My 85 sierra classic currently has 2.5 inch duals with flo-pro mufflers(14 inch cases) and an H-pipe the truck has a stock 350 motor. My question is which mufflers would you suggest for a deeper and mellower sound because my current mufflers are to damn loud for my liking?
Some people suggested Dynomax Hemi Super Turbos but after looking at these I'am little concerned how long they would last. Would certain models of Flowmaster or Magnaflow be a better choice?

Thanks Rob