Hi Marco,
I think both, Barfuss and Leosounds are outstanding pickupwinders.
I like the Barfuss most if I need Tele pickups (especially the Broadcaster), Leosounds build my favorite Strat pickups (1962 overwound set) and Michael from Leosounds makes great custom work on request.
There is a third german pickupwinder -Häussel- and he builds my fav humbuckers (the '62 and wild honey modell)
But overall, it is all a question of personal taste, all of them will do a great job, no matter if you choose Tele, Strat or humbucking styles of pickups...
Regards
Stephan