I have been flying one of these for around 2 years now and I am finally getting the bugs worked out of it. I am flying this plane now with a Saito 180 running 30% heli cool power for fuel. This plane has awesome vertical and alot of tork. Be care full of its high speed Stall rate it will really shock you mine has done it to me just a couple times. This plane is pretty easy to hover I am not to impressed with the knife edges but does do them with some roll coupling imputs. Axil Rolls are perfect have never flown a plane that does them better. Hammer heads and stall manuvers are easily done with little rudder imputs. Landing this plane was different at first I learned just to keep some power on until you are really close to the field. Just my two cents good luck