Regular for me. I tried the light version and didn't like it. I haven't tried the dark one. These have regular in them, the twisted ones, the multicolor side is it.
And these are pretty much all regular Terranova 2.1 over a base color, possibly black, and encased.
I really wanted more of the aqua color you can see on the sides of some of these and thought that the light version might take me there. It didn't.