I would go with the Golden Auburn one. Rangiku's hair, if you look at it in the anime, is an orangy-blond, emphasis on the blond. At any rate, you can always darken the color to have more orange in it if it's too blond. From the little swatch though, it looks like the perfect color.
The red I don't think will work for her, because her hair is really more of a blond than a red.