The problem with smaller aircraft is thet they must be flown FAST. In upper classes, it seems the next maneuver must be done right after with a smaller plane and you get no time to breathe. Elements inside the maneuver must be done very fast also and you can get guys complaining that they do not have time to actually see what's happening. Mistakes appear worse when made at a fast pace so you get some downgrades.

All that said, I flew a 1/4 scale Cap all the way through advanced. I have managed to win some competitions also. I have tried the unlimited sequence a couple of times but I can't get it to look good... That must be me as the plane has the power, precision and weight required to fly right but it is just damn too fast for me...

Soooooooo, get at least a 90 size plane with good servos and work your way through intermediate if you are an amazing pilot but don't expect to fly unlimited with a small plane like that.