One of the safest bets in old speakers are Magnepans. No voice coils to burn out, no surrounds to dry up and disintegrate, no fancy cabinetry to get banged up. There is really very little to damage or go wrong in a Maggie but you do have to be careful around that ribbon tweeter.
How long do speakers last?
I ask because I have an opportunity to buy a pair of Von Schweikert VR-33's for an insanely good price. I get it: "it depends how hard they have been driven", but judging by the condition they were very nicely taken care of. My only concern is that will need repairs in the future whereas I could just spend that money on new speakers. On the other hand they sound fantastic. Just curious about the lifespan. They'd be a nice upgrade from my Klipsch bookshelves / sub combo.