What is wrong with park flyers? Why look at em as just a stepping stone to 'real models?
size has nothing to do with ability
friends I fly with range from World/Nats/ TOC winners to guys who just like to cruise in circles.
Most of us have been thru the 40% stuf and simply like the more convenient smaller electrics - They can be extremely good acrobats once you learn to build and set em up correctly
The absolute best basic trainer I have seen in 40 years is the VAPOR-
Ifyou don't understand "why" it is - you really have not done any serious experimenting in what it can do.