I bought mine from KnitPicks years ago, and still love them. They’re wood, which I prefer to knit with, and really pretty, and the cables are very flexible. The tips sometimes unscrew themselves, but not if I’ve used the little tool to tighten them. And I think one or two, over the years, have separated from the metal end, which is a shame, but I bought so many of the parts that it hasn’t been that inconvenient for me. I keep my needles pretty organized and have many of the little tools, because you get extras every time you buy another cable, so I don’t see that as a problem.
I can’t imagine moving to a different set now, after I’ve invested so much into these. But looking at the Knitpicks site, I see that they have some new colors and other options, so it might be fun to add to my set.