I bought the plane with no Electrics. After extensive research I went with Motrolfly in both of my current builds. The 4330 216 KV on the Extra and the 4315-480kv on th MSX. The reasons I went with the MF motor are its' Lighter, Runs Cooler, Handles a 16" Prop, has larger diameter and shorter stator length, not to mention it's hand wound by a Man in the good ole USA. Also I wanted to run something different that what comes from SunRay Technology (Maker of E-F TORQUE, HACKER, HYPERION-Z,SONIC Electric, LiPolice, Turnigy SK3. Example the Torque 4016T/500 (280g) is exact same motor as: Hacker A40-10 L V2, Kv 500, 10T =Turnigy SK3 4250-500kv, 10T =PA Thrust 50, 487Kvsee.
I hope this help you understand why I went with the Motrolfly