I have an RB Racing LSR Pro-Stock Spyder on my CVO Ultra.......this pipe is louder than the Black Hole, but quieter than the straight LSR.
I Previously had Vance & Hines, Bassanni, Screamin Eagle and D&D Fat Cat........ The quality is very good. Fit was perfect. Ceramic and Chrome nice. The sound is LOUD and mean.... sounds like a NASCAR ! As far as the SOP.... much stronger low end and seemingly no sacrifice on upper end. For me, It totally blows away the Vance and Hines Power Duals...... and the others are not on the list. The only one near the RB is the D&D -- but the D&D is one click down in quality IMO and a more "tinny" sounding.
The Owner and his wife are a little eccentric..... but, if you give them a chance, they are fine. They build each pipe and each piece for each order. It takes a bit longer because they group the plating processes -- in other words, they hold some orders waiting for following orders to get enough pieces to plate cost effectively.
My pipe took about 7 weeks from order date.
I love my pipe and get compliments on the look and sound all the time!.