Road Burner Street Pro 2.5" vs 3"

[Cally]

Looking for my first bit of advice here.  The current Roadhouse exhaust on the Drifter I just purchased will not go along with the theme of my planned build.  So it is on the way out and I am looking at the Road Burners matte black Street Pros.  Did a bit of research already and looks like the build quality is decent.  What I am looking for is if anyone has experience / feedback with the 2.5 vs 3" systems.

Another thought... The Drifter had a nice power curve, no flat spots with the Roadhouse installed.  Wondering if this will also be the case with the Road Burners.

Oh, and they are Classic exhausts but I plan on running a Classic passenger peg for fitment.

Thanks in advance
Cally