I have I think the older Addi lace needles. They are gold with red cords. The blue ones are the Addi Turbo Rockets. The cords are sturdy, especially if you yank on them hard to move stitches back into the front needle. Bad habit that I have. Mine tangle and I spend a lot of time undoing them. But the Turbo Rockets are smooth, pointy, and help you knit faster. I would suggest just buy the one fixed circular you need. If you like it, then buy an interchangeable set. My current favs, thick sturdy cords and no twisting, is the Knit Pro Zing needles. Brushed aluminum with nickel tips. I’m horrible. I keep buying needles in sets, find I don’t like them, and buy something else. Don’t be like me. Only buy one to try lol.
Circulars fixed: Susan Bates a few, Addi Lace whole set, Addi Turbo a few, few Knit Pro Karbons, whole set Karbonz straights, few Knit Pro Zings, whole set Zings interchangeables. Not buying anymore. Hello, my name is Cindy and I’m a knitting needle addict.