I would like to first say that before these I have only been using regular aluminum circular needles (for over 10 years of on and off knitting). I had enough sizes and the only reason I searched for something else was that I wanted more flexable cable, and with that, a detachable one, so I don't have to have millions sets. I was so glad I found those recommended on a knitting forum and plunged to buy, although at the time I thought price is really steep. When I started using them on a half way knit jumper, the first thought that came to mind was "How could I have been torturing myself for so many years with ordinary needles?". I felt I was in knitters' heaven and I can confirm that because of the flexible cable and the amazing smoothness of the needles, my knitting is now done much faster, as I don't have to be pushing and pulling loops and fiddling with a hard cable.
I have read that some people have problems with the needles slowly coming off the cable, but for me - once attached, I never had to tighten them on during knitting.
I don't know if it matters, but for info, I knit the continental method.
I would recommend these to anyone. Needles are very light and smooth and I love the fun colours of the wood, cable very flexible (great for knitting in the round with magic loop).