Update on the "Be Quiet Silent Base 600" case.  I finished the install this morning.  I give the case an F as it was the hardest install I've done, and I've built over 10 desktop PC's. Mounting the SSD's was a pain.  Routing the power cables required the 24 pin and 8 pin motherboard cables to be routed on the "inside" of the case rather than through the grommets and back in.  For being quiet, I'm getting some fan noise.  I'm using the same Thermatake liquid cooling CPU cooler and "quiet" fans.  I haven't isolated the fan noise yet, whether its the new Antec HCG 850 "quiet" power supply or the case fan. 
 
UPDATE:  I found the noisy chassis fan(s) and reduced the max fan speed in the BIOS.  The PC is now "quiet".  But I still give it an F for assembly. The side panels are a hassle to get lined up so they can be closed and secured.       

I really like this case.  My DAW uses one.  I have built two other computers into Fractal full tower cases (one is a game machine).  I have large. clutzy hands so I needed the space to complete my builds.  Plenty of room for drives with the cage system Fractal uses.
   I also had occasion to need a new front USB card in one system due to our dog becoming tangled in a plugged in headphone and nearly pulling the computer off its table (a very large dog!).  I requested a quote for a new part and Fractal just mailed it to me - no charge!  That is real service and I am loyal to them now.
  By the way, that is an excellent price on that case (from Newegg).
 

I have had a Fractal R4 case for about a year now. It is very quiet but I had to isolate two internal HD's and put a big book on the top to reduce vibration noise. That is
It is very quiet now but I had to isolate two internal HD's and put a big book on the top to reduce vibration noise. That is after working with two different cases!
 
 
 

I have the Deep Silence 5 from Nanoxia... awesome... they have a number, super innovative cages, wiring, fan/circulation system... Before choosing this I spent a week looking at everything awhile back and it was considered the "case to beat"...
 
"As mentioned in Part 2, this is currently the silent case to beat in terms of thermal performance and acoustics. You'll find that it's very similar to the popular Fractal Design Define R4, except the doors split in two, there are two fan controllers, there's a pop-up sound-damping panel, and the fans have turned green with envy. The case performs better thanks to 3 included Nanoxia fans which are actually pretty good fans.
The only downfall is the case's high price. Nearing the $130 mark, it can't quite capture the kind of audience the Define R4 can get."
 
The Deap Silence 1 is adequate for most, size wise...
 
http://www.nanoxiausa.com/products
 

Vastman,  thanks for the case suggestion.  I will check it out.  Once I started building PCs, I realized how much fun and rewarding it could be to have just the PC you want/need.  On my next build I may use a Deep Silence! (because we all know that it is golden)