I bought 2 pair of Lantern Moon circular needles to replace some old bamboo ones I had. I thought I'd be upgrading but as I am knitting a hat on my size 6 16" circulars I am not happy at all with the joins. These are not smooth joins at all and my yarn gets hung up constantly to the point where I was afraid my yarn would snag or split. My knitting is going very slowly as I constantly have to stop to lift my stitches over the join. Fortunately I have some Addis which I just switched over to and the knitting is flying along on the Addis now. At this point I am glad I had the Addis to.