I have a Midwest Aerobat which is stated to be a great second plane. It is a high-wing trainer "LOOKING" aircraft with an OS46ABX. Although this plane looks like a trainer, it is far from a trainer. Piper said it well, there is a big difference from a plane with no dihedral and one that has trainer like dihedral. The Aerobat does NOT give me time to recover as the trainer did when loosing focus or getting turned around during flight. Now, anything will work with the addition of a buddy box connection but that may not be possible if the radio is setup with end points, dual rates, and so on unless both radios are set up exactly the same. So, this is not a solution. Best way is for a beginner to use a basic setup with a buddy box and with a plane that allows recovery. The Aerobat, although it is a great flyer and I love it, won't do as a trainer very well.

I use Aerobat not the 3D you suggest because I am familiar with it and have flown it a lot since solo day last August. I also fly a Tiger 60, Four Star 40 and a Rapier Delta Wing. All different but none of them would do as a trainer even with minimum throws for minimal performance.

Stick with trainers for training and use the buddy box. You will get best results and minimum heart-break.