Spinning Discs with Holes: Opaque, Translucent, and Color Translucent

Here is another strip I made a few different versions of and want your opinions on.

What do you think of the differences in these strips? Do you prefer one to another?

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Spiral 18/20: Spiral Spiral: 100% Opacity & 50% Opacity

I don't know which of these I like better. What is your opinion? If I were to show one publicly, which would be the stronger piece?

100% Opacity----------------------------------50% Opacity

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Spiral 18/20: Arch Spiral: Black, White, and Transparent

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