Each set of slip-ons have their own unique sound. Get on u-tube and search for the different pipes your looking at. That way you can hear the different sounds they make and decide which sound YOU like
The only mistake you can make here is to buy a set of slip-ons without hearing the sound and then not be happy.
spend some time doing research and then spend your $$$ just once.
2010 RGC Trike (Elvira)
110 CI, GMR 577 cams, Drago's 2.5 Heads & Exhaust
Stereo by "No Cage Audio"