Comment Get A Silent Elegant Case (Score 3, Informative) 720
I build home systems sometimes for clients, and the Wife Factor is frequently the most critical aspect. This has been true since I started in 1985, but is more true now as computers have become essential to so many households.
In my experience, the Fractal Design cases (e.g, the Define R4) have two wife-pleasing qualities:
(1) They are simple, elegant, unadorned museum quality sculpture-like mini-monoliths; and
(2) They are literally almost completely silent. I don't mean merely quiet, I mean you cannot tell whether the system is on or off. This is with fans, not water cooling.
Understand that this may not solve your real problem, which may be the mere presence of the machine in the living room. What it will do is force an honest exposure of the real issue, and besides that you'll still have a great case you can migrate components into and out of for years and years. Also it means you don't need a new rig, just new clothes for for the rig you already have.
Note that I do not have any relationship with that company aside from buying their cases for some system builds where they fit best. I will say that they are superbly designed inside, and the designers obviously build systems themselves. You'll know what I mean if you get one.