gt the fixed circs at knitpicks.com. I don’t have thier interchangeable sets, but I use thier fixed circs for socks. I have 24" ones, but I prefer 2 circ method. The cable is very flexible - perfect for ML, too.
I have Addi Turbos in both size 1 and 2 in the 32" lenth and I love them. They’re a little pricey – $12-$13 – but the cable is extremely flexible and the joins to the metal needles are very smooth. I use them mainly for knitting socks 2-at-a-time using Magic Loop and I’ve had them twisted up so many ways, but they still work like a dream. I highly recommend them!
I love my Addi Turbo’s ! They are pricey, but for magic loop I prefer the fixed cable. The Addi’s really have a nice tip to them that makes working with those tiny little stitches pretty easy, yet doesn’t fray the yarn.
Most interchangables don’t go under a size 4 or 3. The device to hold the needles to the cable is larger than that. You’ll most likely end up with fixed. I use 40" because I do 2 at a time. I have one set of Addis and just ordered some KnitPicks. I’ll let you know how they compare in a few days hopefully