One of my physics profs had a story about this. He needed two resistors to be very similar in performance for a circuit he was making, so he asked for a couple of the super-high-quality ones.

His advisor said “fuck that, get the 1% bin, they’ll be bimodal at 1% above and below rating, sort em and find two that match to the degree you need”

That’s kind of analogous; do you need to try to hit a particular value (accuracy) or do you need things in a consistent relation to one another (precision)?