Hmm.
I wonder why the dichotomy. Where I was, it seems the inverse.
Data points re: 1541 reliability:
* all were early adopters, but moved to the Amiga within a year of A500 release. So there is an end-time bracket here.
* I had a VIC20, was an early C64 adopter, and most people I knew were too. So, a start time bracket.
* all drives were bought in Canada
I'm thinking, maybe source plant for drives, PLUS, maybe earlier bought drives were more robust/more expensively made. Fewer cost saving measures?
So hard to tell now. :/