I have AERO circular needles, not the most fancy kind but they do the job! I just bought more circ's and their plastic (or is it nylon!?) cables are pretty stiff and all "spring-like". Sorry I'm looking for my words tonight. They are all in rounds and even when I knit the cables still curve.
I'd like to know if there's a way to straighten the cables and make them less stiff to work with.
They don't sell Aeros around here, but hopefully this trick that I use on Addi Turbos will work just as well. I use a hair dryer on its hottest setting on the cable and it loosens up pretty well. I've heard that others use boiling hot water and the cable un-kinks itself almost immediately. Just be careful not to burn yourself as the metal needles can get hot.
This is interesting. I inherited a bunch of Aero circs and they drove me crazy with the cables. The LYS owner suggested if it were in my budget to upgrade to Addi Turbo or Drops and you know what? They've never been a problem! So if you can, I think it makes a difference to buy the best tools you can. BTW, I like my Aero straights.