RE: Great Planes Reactor GP/EP 3D ARF .46-.70
cmala3,
The AX seems to have more power than the FXi. I have an FXi in my NexStar and it seems to have a lot of power though. I can almost hover it and it is a big high wing plane. I would guess it will depend on your final weight and balancing. The Reactor is going to come in around 6 lbs I would guess and my Nexstar is at least a half pound heavier so I bet you will be surprised by the performance you will get. Bump up to 15% fuel, if you have not already, and that should give you a little performance boost as well.
I am throwing in an Evolution 46NT which I feel has more power than the OS so I will let ya know when I get airborne. I am in Ohio though so it may be a while until I get to fly... [&o]