"Worn Out" is an exaggeration, meant to keep my question short. I tend to break a string after a couple of years on my #1 player, so I wanted to plan ahead. Plus the E is showing some slight intonation "wobble", audible and verifiable with a pedal strobe tuner, a sign of age in my experience.
760FS is exactly right, thanks! Found a spare set on my shelf that I'd totally forgotten about and that's exactly it. Love these strings, super tight and focused but still warm and round.