you get much better feel and control with the brake lever with the RCS17. It takes less pressure to apply the same amount of braking force with the OEM master cylinder. So for those of us that like to do 1-2 finger braking, you don't have to nearly pull as hard to get the same braking force, while also allowing you let off gentle finger pressure for that brake modulation during trail braking into corners.
A must have for the experienced track day rider, general street riding you probably won't notice a difference.
