Favorite German tool?
Bosch GOP40-30 oscillating multitool with the Starlock attachment system.
Next would be my Bosch jigsaw. 1590 EVS top handle?
With the IIRC Swiss (hey, they speak German in Switzerland. Does that count?

) Bosch jigsaw blades with the ground teeth (as opposed to just some stamped teeth).
Or the Bosch Colt palm router.