plane + engine + radio = more than 500$

u are looking at a 1/4 scale plane, if u want to 3d.

need powerfull engine, 250$....
plane, 300$....
need hi torke servos, 25$ each..

for about 500$ its gonna be hard, unless u look for a used plane...

ur funtana can do most of the 3d acros already, if u move to a bigger plane, the main advantage is more stability in windy conditions, but if u couldnt master ur funtana, u r not going to get any better at a bigger plane, just my 2 thoughts...