Love them! My Buckeye Burl Rogue was built with LED's, and I had a shop night Alembic that had them and I got spoiled. I had a friend that had Fretfx on his bass and they are the next best thing to LED's, are easy to install and you don't notice them. So I put them on this bass and my Walnut Rogue and I'm going to put them on my other Orion. Simply put, I love the fretfx. And as you know, there are times when you're on a dark stage and with them you don't have to search for markers!