I got a try of Elementary OS 0.4.1 (Loki)
Eyestrain Free, didn't feel any eyestrain, can constantly work on that system not feel tired.
No more I can say, just feel easy.
(The above screenshot can prove nothing, but I really don't know how describe my feeling...)
eDenon Cool, which model of Macbook Pro?
Elementary OS is too "simple" for me. I like the customizability of Ubuntu/Debian. 🙂
Arch and Gentoo are others I hope to try at some point.