I had a Diamond S titanium can on by VR1 Boost (it was louder at idle, cruising, and WOT vs. the SLP). I now have the SLP on with around 100mi or so and it is quieter vs. the Diamond S.
SLP is only about a 6lb savings over stock muffler so keep that in mind.
Where I trail ride the louder muffler is an issue, only reason I tried the SLP was I heard it was quieter than Diamond S - and it is.