Does anyone here actually benefit from having all of them? I'd be
interesting in knowing what kind of precision work requires them.

Just to give the other opinion, I wouldn't be without a full set by /64s.
Then you can grip anything, they will collapse that much. I hate not having
the tool I need when the job comes up. (If you don't get work you got to do
NOW, things might be different) Of course, I waited and bought at Ebay
pricing.

Karl