Guten tag Wolfgang
I used:
I recommend anybody to do a DNA test, since it will bring you much in terms of learning about your specific DNA, and its yours! They have lots of project groups, and namesake groups et cetera, going into further relevant research. I even recommend going for a full 67-DNA test since smaller test will only offset you in your search.
They have periodic price offers, usually in summer and around the Christmas Holidays, so check the site regularly for offers, and you may find a good deal.
Y-DNA 37 Marker
37-marker matches are highly likely to be related within the past 8 generations.**
Y-DNA 67 Marker
67-marker matches are highly likely to be related within the past 6 generations.**
If there is further interest, ask and I may elaborate on this issue from the perspective of my experiences. There are by the way special DNA mail-list groups to learn more.
Best
Martijn