What brand slipon mufflers sound best?

I have to say Thunderheaders slip ons. I ditched my V&H true duals and went with V&H headers and Thunderheader slip ons and gained several horse and more torque. After hearing about the before and after dyno sheets at the shop I got my motor/cam etc work done at (Markum's in Pendleton, IN) I am a huge believer in Thunderheaders. The sound in 3rd gear was almost too much at first, but after the first couple hundred miles they got a little quieter....or I got deafer! LOL
 
They have to sound good to you!

However you asked...great traditional deep HD sound...the original SE 65115-98B's or the new SuperTrapp SE which are the exact same pipe as the 98B's.

Great acceleration sound, and a mellow cruising sound that is radio friendly.
 
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