Hm, have you tried making the background white and adding some soft cyan color gradient to it? Cause the BG is attracting too much focus against your render.
On both ones the blue lines on the bottom right are hitting on the background. Also I kinda don't think that the background is the perfect fit for the render C4D you used.
Also I think you have made too big of a light source on top and it kinda becomes annoying for the eyes. Great work tho.
Edit: You latest one has a more suitable background IMO.