Over the weekend I was riding one of my old bikes with a nitto pearl stem that squeaks sometimes and found myself thinking about replacing it with one of these super-cool threadless conversion headsets. While modern threadless stems are functionally superior to a quill stem in just about every way, I still prefer the aesthetics of a quill stem on an old steel frame. I do have some modern steel frames with threadless headsets and stems that I've learned to live with so still considering.