The best, because ....

..... The groove in the middle is wide enough not encounter so modern system flashes with its additional contacts on metal. This is precisely when I delivered my hotshoe Aurora Firefly happened: because the central milling was very narrow there, the lightning made problems and lies not far trigger itself. Its electronic control system was permanently shorted.

This happens with the Walimex hotshoe not - it leaves room for all contacts and I'm glad I had a so in the drawer when I needed him. Meanwhile, I have more of these little helpers in use (and also replenished the drawer). The paint makes the thread at the first screw go a little hard. This gives, however, with the time, and I see it rather as a kind of "screw locking".