...between a $200 H9 Sundowner 50 and a $1100 Big Bruce that would be suitable for a Jett SJ .60LX. I do not have the engine yet so that is still adjustable. I got a taste for speed from a little electric I played with but after blowing a battery up like a baloon I decided one expensive engine is better than a bunch of expensive batteries. I'm more of a glow and gas flyer anyways. So what will give me ~150 MPH?