Thank you so much for the information. The Warrior is what I got my PPL in and actually fly, so it gets my vote. In XP12 the Warrior won't make full RPM, the aerodynamics preclude many maneuvers including pattern work, and if there is any rain the Z shaped pattern almost totally obscures vision.
I picked up the Arrow IV on a sale mostly in case I ever decide to step up into our club T Tail. The Arrow at least is functional in XP12.