I've had some good experiences with a few German players, but a lot of them are as Ubaria described, unfortunately. Usually kind of stand out due to many of them refusing to speak any other language than their own
On Attack, I mostly play Fuze (got his first uniform in the bundle the day it was released!), Twitch, and Buck. On Defense mostly Smoke, Frost, and Valkyrie.
Fuze, Smoke, and Buck are definitely my favorites, though!