I too agree that 3D has become confused with aerobatics. I consider 3D hovers and harriers. Aerobatics may include rolling circles, snaps, walls, and loops. A 3D plane should have more than a 1:1 power to weight ratio. A 3D plane is better for learning 3D than a scale(Extra/Ultimate/Giles/Etc.)plane is, but as you progress you should get into large scale aerobatics planes as you budget allows.

Woops