What Graybeard said is why I have developed a slightly un-orthodox approach to teaching. The first buddy box flight most new students get from me is usually on my Avistar. But the first plane that I teach them to take off and land with is usually the Hobbyzone Super Cub. There is some mental trick that happens here. I've found that if they get some stick time on the faster and more responsive Avistar first, their brains and thumbs re-adjust to the slower Super Cub quicker than if I just start them out on the Cub only. I very often recommend students buy the Hz Super Cub as thier first plane, but a lot of that depends on my assesment of thier enthusiasm and committment. If I know a student is going to try fly with or without an instructor present, I steer them towards the HZ cub.
I have had a few students who I knew were seriously enthusiastic, were listening to my advice, and would get support from others besides myself. These students I steer directly to an Avistar, Alpha 40, etc. instead of the Super Cub.