Here is a model provided with support for two brushes, therefore more compact. Two brushes are provided with a sensor.
The use is very simple and suitable for children (from 6 years).
What changes other brushes is the possibility to choose the brush rotational power (one of the functions is for sensitive teeth) but also a timer function (brush vibrates every 30sec to let you change region brushing). For me it's important because I have sensitive teeth and I do not tolerate other electrical brushes. This is a brand recommended by dentists for effective brushing.
This brush also has a pressure sensor and alerts you with a red light signal if you exercise too strong support on the gums and teeth.
What is missing is a transport box because from experience I know that the brush can turn on by itself during transport in the toilet bag and discharge. Incidentally, autonomy of a week with two brushings a day.
I recommend