These strings create a really bright, rich sound on an acoustic guitar. They get in tune pretty quickly (when they're brand new) and were staying on pitch pretty quickly - I didn't have to keep re-tuning them, which is more than I can say for other strings I've used. I have not used Black Diamond strings in a long time. I wasn't able to find them in my store. But now that I've bought them online, I don't want to use anything else again. They have a beautiful tone and I find them very easy to play.