I had also tried the Bosch PSR 14.4 Li screwdriver, but also because of quality problems (chuck), sent back and bought me this. I can give my speakers only right of me Metabo comes thanks to the good ergonomics, despite of the same weight, lighter than the Bosch unit in front. Also in terms of power transmission it is superior to competitors. Screw in which nothing went with the Bosch unit, could be sunk with slow speed even as in butter. Not to mention the quick charger that the battery actually charges in 30 minutes. In connection with a 2nd battery are no longer standing times!
I am glad that I have decided to use this device ...