The Sceptre pipes are very loud, very nice quality and finish as well, I have not heard the pipes with the baffle so can't comment on that. Brent also sells Staintune which are also SS and of the highest quality, also the Staintunes come with a baffle that you can take out very easily or leave in, they are also much quiter and sound a lot better, at least to my ears. The Staintunes add about 8.5/9 hp, not sure about the Secptre. Staintune suggests that you re jet to 135's and pull the snorkel and that seems to give the best results. They are also pricy but will last as long as you have the bike..don't think you will go wrong with eaither set.