5th Nuline Design logo option

This is another logo option for NUline Design. Since it's an architectural Design firm I decided to try and make the logo within a 3D modern structure. Not sure how I'd transform this concept for the CAD-Solutions brand.

Nuline Design and Cad Solutions logos

I just made up these logos and sent them off for feedback. The client likes the top ones, but thinks the CAD solutions conveys a design service element. He wants to keep it a production-only company. Maybe make the green "C" less freeform and more geometric? Thoughts?