The only diffeences that I could tell off the bad between the two are the PCR has Laydown Servos and a Pull start on 8 Port. The PBS has upright servos(better imo) and no pull start. Sounds like you might want to go for the PCR if you want the pull start. Both speed and performance wise are the same, unless you get caught up in that whole "lower CG" thing. Which is BS!