Okay I got the Park 450 BL motor, and the preformance is better then the stock motor by far. I then installed the Himaxx 2816-0890 BL motor. There was even a little better prefomance and a 2 min. longer flight time. I have over 25 flights on this plane and I really like it even though it's a foamy. After my test I decided the Himaxx is worth the $7 extra dollars and I would recommend it for this plane. Here's what I'm using: Himaxx Motor, Tanic 3s 1550 11.1v Lipo, Phoenix air 25 ESC, Cirrus Micro 6ch rec and HS-55 Servos. My next plan is to lose the Y harness that works the ailerons and run 2 -12" ex and have them on diferent ch. so I can try flaperons.