I would agree that it will fly Imac and all aerobatics very well with a 50.
My point was that if he wanted to do close in post stall 3D,he should consider staying as light as possible and not go the 50cc.
I am a part time instructor at the field,you have no idea of the amount of sticktime I have on this 260 with various set ups.
My overall opinion is that it flies and presents itself like a 60 size Extra when the pounds start adding.
In my opinion,when heavier,it carves across the sky much too quickly,downlines are fast,aerobatics become rushed,and one finds themselves using alot of space for 4 point rolls etc.The 260 is nice,the motor is good,its just not the best combo for some fliers,thats all.Many have the 50cc and love it,the thread starter is asking for choices.Based on his preferences he can make the decision.
It needs a big glow or small powerful gasser,not the easiest call sometimes.