Number one. The top dog. The big enchilada. That is what the Silent Base 600 from be quiet! is. So what pushed this case to the top? Well, first let me say that be quiet! is fairly new to the case category, so I was a little skeptical at first. Coolers, fans, and power supplies - be quiet! has those all figured out. Some of the best you can buy. But cases? How well can the expertise in coolers, fans, and power supplies transfer over to cases? Turns out the answer is amazingly well. From a quality perspective, I was most impressed by the fit and finish of the case. Top notch all the way. And the focus of the design is to be quiet - and that is what this case is all about. The dual-layer side window is something I have never seen before. It really keeps the sound down, along with the extra sound-deadening material in the front and side panels. And they go a step further and decouple the hard drives, fans, power supply, and motherboard tray to reduce the chance of vibrations and sounds from making it out of the case. Throw in the side vent that allows the addition of a fan to move air behind the motherboard, and you have a winner. The accent trim is also available in several different colors.