Well, mine doesn't have the sound proofing obviously, but it's decent. The fan controller has 3 speeds and I keep it on the second speed when I'm not gaming. When I'm gaming I crank it to 3, and while it's noticeable on idle, it's not a problem once the fun starts. The biggest reason I crank it to 3 is because, if my CPU hits 60 degrees Celsius the crappy stock fan takes off (that thing goes over 5K RPM). I don't know where you keep your case but accessing the fan controller might be a bit tricky (it's the vertical bracket near my right leg in the first pic). I currently have it on my desk, but I plan to move it beneath eventually.
Anyway here's the other case I've mentioned, the Segotep Raynor #1 #2. It's the same case with a different face and should be at most half the price of the R4. Comes in red, green and white if I'm not mistaken. I've installed hardware in two and it's pretty damn good when it comes to features. The look is an acquired taste. Now the hard part for you would be finding it, if that is at all possible.
Mine will be under the desk on the printer cart. I'm sold on the case and I'm willing to spend the money but I have this thing that I don't like to spend too much money at once so I'm gonna wait till Thursday or Friday before pulling the trigger. I think the case is worth the money. I'm gonna have the thing for maybe 5-6 more years so I think I should spend on quality parts especially the case.