Yes, I find carbons and most nylon strings to be fairly stable. I've recently been trying so-called titanium strings; D'Addario titanium weren't too bad but I'm currently using Hannebach Titanyl trebles for a second time (with Royal Classics basses as it happens) and I find the Titanyls really problematic. What seems to happen is that after quite a short time they become significantly sharp. However after retuning they seem to settle down into reasonably true intonation. I wonder if the vibration of the strings makes them warm up a little and either the Titanyls warm up more than other strings or somehow the different molecular structure causes a greater effect. It's a puzzle.Laudiesdad69 wrote:I've tried many different strings, and the ones that stay in tune the best are generally carbons, after they have settled in.