Hey there. I’ll throw my vote in for the Freedom Performance Sharp Curve Radius w/quiet baffles..
I initially went from stock to Turnas Dump Pipes and enjoyed those for about 6 months. They ended up wearing me down though. They are ridiculously loud and drone in a few spots on the power band. I got tired of having to wear ear plugs underneath my Shoei Neotec II so I decided to change it up.
The Freedom Performance Sharp Curve Radius with the quiet baffle inserts are PERFECT and I believe are the exact sound you might be looking for. They’re tame in lower RPMs but definitely have a roar once you crack open the throttle. The quiet baffles soften the harsher tones you would get using straight baffles. The pitch is a little higher that I would prefer, but still deep enough to be satisfying. I have not heard a drone in any gear or RPM. Quiet enough to hear my music over the SENA, but loud enough to fit the bikes character. I’m VERY pleased with this change.