After just a few uses, the join became loose on one side of the needles, and is constantly sliding forwards and backwards now. The join on both sides is not very smooth, and the tips are way too dull. I wouldn't recommend these to anyone. I don't think any of Lantern Moon's circulars are very good, to be honest.
Quite sometime ago I purchased a set of Lantern Moon's interchangeable needles... and I hate them so much. They're the worst needles I own. I can barely tolerate using them. The tips are so dull it's virtually impossible to pick up stitches with them, and the joins are always snagging stitches. I would not repurchase these or suggest them to anyone else.
These are, bar none, my favorite circular needles! They're better than the Addi Turbo's the join is a bit smoother, and the need itself is far, far smoother so the stitches move across them better they're WAY better than the Lantern Moon circulars which I hate and loathe to a degree I cannot describe--their needles are terrible. The joins are so bad and the needle tips are so dull it's ridiculous. Knitting with LM circulars just makes me angry.
I'm definitely considering ordering their interchangeable set.
These needles are pretty good, but I prefer the Knitter's Pride Brass Cubics to these. Somehow the metal of KP Brass Cubics feels smoother. The stitches move across the surface of the needle better than on the Addi Turbo's. I think the join on the KP's are slightly better too.
My biggest complaint with the Addi's though is that printing the sizes on the cables is so stupid. It's fine at first, but after a couple of years the cable clouds so much that you can't read anything on them at all.