Accurate streamlined

This is my 4th BRAUN electric toothbrush for more than 14 years.
This purchase follows the failure of my former SONIC. She had held the previous 5 years and Sonic a little less than 2 years but changed under warranty.
To replace it, so I hesitated between normal and slim ultimately choose the latter.
I confirm that it is actually much lighter and thinner than my old SONIC.
In use, it is actually quite nice, even with large hands!

Question efficiency, it seems to me is equivalent to the old SONIC.
Some prefer the round brushes models, a little more efficient in absolute terms, but I could never get used to it!

Dialogue my last visit to the dentist ... there 3 years !:
-It's When the last time you saw a dentist?
-> It's been 10 years!
- ?! Well, nothing! I can possibly do a little scaling on the bottom if you want!
I accepted, it took him less than 4 minutes!
So really superior to manual brushing effectiveness, scale deposition on the back teeth is to the credit of my lack of rigor in the use of the brush!

In all this praise, why one star less?
Just for the money! We pay a lot for the brand brush is made in China ... ... unlike brushes that appear come from Ireland!