I truly love the Lykke Interchangeable Swivel Cords as they relieve any kinking of the cords regardless of what I may knit with them. The regular interchangeable cords are good too, but I definitely prefer the swivel cords.

I use Lykke and Knitters Pride Dreamz needles interchangeably. These cords still fit both, and they are a big improvement. The cord is slightly more relaxed than the original, but the big win is the swivel ends. That keeps my project hanging neatly all the time.