Opinions are like a**holes. Everyone has one, and it is only good for sh*tting Just because someone has an opinion different than yours, does not make it right or wrong. So keep it polite, and remember that a**holes are mainly about s*it.
That said, I prefer a dual chamber case arranged like the Lian-Li 011D. And if I am going to go through all the trouble to water cool my PC, then I want some windows to showcase my work. I strongly considered the Corsair Carbide Air 540, and hope I don't regret my decision. Both are good, side-by-side chamber style cases. Both are built with water cooling in mind, as well as having the ability to hide the majority of the wiring.
While I like a bit of 'bling', my fans are all going to be non-rgb My water cooling tubes and plates will also be non-rgb, just UV lit. I can't imagine anything that could look worse than an RGB fan not moving...
I did consider some pretty far out there wall mounted open designs, but the thought of having to take them apart every few months to get the dust bunnies out just made me give up on the whole open thing. I need a fully filtered sit-on-the-desk type of case
I also considered a test bench type of mounting platform, fairly easy to maintain, de-dust, etc., but it just takes up too much desk space. So, in the end I made a criteria list, and the Lian-Li won out by a whisker.
So, my suggestion? Know yourself and your own needs well, make a list of points to cover, and then go shopping. What a**holes may say does not really matter, and the old engineering concept that the form comes after the function still applies.