I keep hoping somebody will post a review of the Dynomax VT muffler, the butterfly valve thing seems like a smart solution to the conflicting problem of wanting growl at WOT with a normal note at idle/cruise. I looked under the VX this morning and the stock muffler is looking pretty homely under there. It must rust 10x faster than the rest of the vehicle.
If the VT is interesting to you, then THIS will really stick in your head...