I have the Samson Stealth slip-ons on my 06 FLHTSE103. They are NOT very stealthy. They do sound very nice though. The idle on my bike is a very deep camy, lopy sound. I get alot of coments on it. However, it is at least as loud as standard Samson pipes and the Kerkers or the old SE performance pipes. That is around town and at idle speeds where the pipes compete very hard at drowning out the stereo. When you actually hit cruising speeds above 50mph the pipes do mellow out and still sound good but allow you to listen to the stereo comfortably.
Magnum