I love the Phanteks Evolv ATX due to the materials use and build quality. The tempered glass version looks especially sexy but it is also a hassle to have fragile component on such a huge case.

The CM Mastercase looks decent and is solidly built, but aesthetic and quality wise, I feel that the Evolv ATX wins by a huge margin.

I know right? It looks sexy as hell, but being super clumsy myself, I think I will break them really fast as well

Go with the normal version then

Internal looks the same to me. But keep in mind that both panels are tempered glass. So make sure your cable management skills are good enough to make the right side look pretty as well.

Anyway, another thing just came into mind - do be aware that the front panel connectors are somewhat lacking for the Evolv - only 2 USB 3.0 and headphone/mic jack.

There's no HDMI and USB Type C. With the Mastercase, you might be able to purchase new front panel connector modules if you need HDMI in front for VR or USB Type C in the future.
That is what Cooler Master is positioning the Mastercase series to be - upgradeable if needed.