I'm a private pilot, so I need a reliable watch for flight plans, pilotage, and instrument work. Something I've noticed is that 99% of professional pilots -- guys who depend on their watch for their jobs -- have a $15 digital Casio watch.
Mechanical watches are a luxury item, whether they cost $100 or $10,000. Sure, some of them may keep better time or be easier to repair than others, but it's a bit disingenuous to suggest that any of them are a good value. We don't discuss the relative merits of abacuses while ignoring digital calculators here (I hope!)
All that said, there certainly are times when it's best to buy quality, and some of the earlier posts are spot on. Metrology tools in particular are a much better value if they're quality.
I mentally try to answer these questions with every purchase, tool or otherwise, and then purchase the least expensive thing that fits:
- how often will I use it?
- how durable does it need to be?
- will a used item offer the same utility for less?