Benefits = high speed, choice of brushes and interesting types of brushing, good grip - effective interdental spaces by taking proper brushes.
Good control of the battery charge (LED ...)
Disadvantages = pressure sensor a little gadget - seems useless in its current form -
A charger unit can be wall mounted would be welcome (as in previous models).
Fairly rapid wear of brushes if you want to remain effective - but it is not new
