I've been a bit of an LRP fanboy until recently so i'd normally suggest going for the LRP 10.5, but more and more I'm starting to want 2 motors for each class, one with torque and one with rpm. For this reason I'd say get 2 motors, one of them the LRP 10.5 for torque and the other could be an SP 10.5 for high revving/rpm use.