I have a 1986 Silca Pista that I bought new at that time, a Leynze floor pump (don't know the model) that was given to me. It's about 10 years old, an Origin 8 floor pump that was a sample from the sales rep (prototype that didn't make it to market). About 15 years old.
The Silca still works and can be rebuilt from parts available from Silca USA. Unheard of customer support. This convinced my son to spend 200 bucks and get a modern Silca.
The Leynze works well and gets used once in a while. The origin 8 gets used more than the others because it has a thread-on head, which I prefer to a lever or the Silca push-oh head.
Comes down to one simple thing that one must do when choosing a floor pump. Pick a pump and use it. They are all darn good. If you want a legacy pump, the Silca is the only one available, and you won't be disappointed.