I have a fluke 77 that I've had for over 20 years. Other than an occasional battery change, it has had zero issues until the LCD froze while left in a car trunk last year. Not sure why it finally was an issue, as it had been left out in freezing weather more than a few times before. It still works, just a bit more difficult to read. I've added some newer flukes more recently, and continue to have good experiences, but they are only a few years old.
One thing you get is knowledge that any cat II/III safety ratings are real, if you are working around AC power systems. And they use first rate components. While my 77 has never been recertified, it is well within spec when compared to my new 117. And the 337 clamp meter has always behaved as expected. Though I will say for DC clamp meters you get best results if you can take current to a known zero after installing the clamp, and then zero the meter.