Thank you, Ευρυάναξ ! Nice comparison.
I prefer the C: smaller and more interesting dial and BLUE colour! And ... Eco mechanism.
I have voted C!
I have bought the Citizen CA0650-82M. Titanium-Sapphire.
The only thing is that I like more the case shape of your C ...
And a bit smaller, is also preferable for me.
But I'm happy what I have and enjoy the reviews like yours.