These are my favorite needles to use. Smooth!!! Make knitting so fast....I highly recommend trying them. I have not had any problems at all. I Love Them!!!!!!!!!!!
Be aware there can be quality control issues. I have purchased about 6 sets of these needles. The metal at the join on 2 sets was rough. The cable was loose and had to be forced into the metal tip on 1 set. My best advice is to rub an old nylon over the join to test for smoothness and also make sure the cables are securely seated in the tips. That being said the cables are ultra-flexible (no dunking them in hot water) and the points are nice and sharp. They ARE worth investing in--much better than the regular Bates/Boye circulars.