The meshify S2 looks like a compelling case for me.

The Dark base pro 900 is nice, but it's rather restrictive in terms of airflow. 

I just wish that there was an option for mounting 2 200mm fans in the front and top, if you can do 3 140mm fans, you can do 2 200mm fans, the case just needs to be wider.

For watercooling, it's fine, but air cooling is great with big fans, lots of airflow.