I'd bet most here have never even heard of Zundapp, Bultacco or Montessa.
Those bring back memories. It's been so long I can't remember if the Ducati without valve springs was around then. Do you know?
I've ridden two of the three listed, plus a number of jap bikes as well as Harleys, even had a Maiko in the mix (most unstable POS ever) but I was a Rider, not a Biker.. Mostly rode alone or with three or four other bikes, did the Sturges thing as well a a lot of rallys. The last ride before hanging it up was around 5,000 bikes, never had problems and never made any