I was the triumph at my dentist also test the most important thing is the head slightly inclined to individually set to each tooth in order to get well into the interdental spaces (tartar is gone now ..)
The head should not stand at right angles to the teeth! (Irritates the gums, but it shows the same anyway)
something unusual and somewhat disturbing, I personally find the timer this sets the rotation of short.
Furthermore, "foam" toothpaste not indeed be a total clean as beautiful as in a manual toothbrush, but that does not particularly bother, because the teeth as such with the manual toothbrush.
Attention: zanbürste not a substitute for flossing (even if it is good in the gaps)
All in all I'm very happy with the product!