The Ascot 6ZRX is a disappointment. It is not user-friendly with its poor quick fastening mechanism for expansion cards and open 3.5-inch bays. It lacks dust filters and has the worst ventilation among the four tested products despite the rather high speed of the fans. The advantages of the Ascot 6ZRX include a rather high-quality bundled PSU with a rich selection of connectors (but with too long cables for this particular chassis) and a handy panel with buttons and I/O ports. In fact, this system case can do for everyday use but you may want to make sure it’s not you who puts the components into it.
The InWin IW-PE689 is the easiest to assemble a computer system in. It is also the roomiest, has a respectable exterior design and ensures the best cooling for HDDs (if you install an additional fan). This model isn't free from downsides, though. It lacks dust protection and its PSU is the noisiest of all. Its front-panel I/O ports aren’t implemented well and it lacks a front fan by default. Anyway, for all these downsides, the IW-PE689 turns out to be the friendliest system case of the four. Its exterior design and specifications make it versatile. You can use it for a multimedia (even gaming) computer or an office machine with the same success.
Some ideas implemented in the affordable InWin IW-MG133 should have been used in its elder cousin. I mean the rational and easily accessible positioning of the I/O ports, the dust filter and even the normal accessories this model comes with. Its test results are close to those of the IW-PE689 although I didn't use an additional fan for the IW-MG133. However, the latter is overall inferior to its cousin as it is not so easy to assemble a computer in, doesn't look that good (that's a matter of personal taste, though) and has a lower-quality bundled PSU (which is more or less good in terms of noisiness). All of these downsides make up for the difference in price, I guess.
Hopefully, InWin will keep on polishing its products off. If the advantages of the IW-PE689 and IW-MG133 were mixed up in a single product, it would be an almost perfect, yet quite affordable, system case.
The Scythe Gekkou Standard is second in my personal chart even though it is superior to the InWin IW-PE689 in a number of important aspects (dust protection, noise and vibration insulation of HDD bays, out-of-the-box cooling, I/O ports). However, it is somewhat less easy to assemble a computer in but costs more considering that you have to buy a PSU for it. The position and implementation of its Power and Reset buttons is the biggest downside of this model.
It’s unclear for me why Scythe released the Standard version of its Gekkou in addition to the Silent one. The whole concept of the system case is focused on minimizing noise and vibrations and the Silent modification adds to this concept with blank noise- and vibration-insulated external panels. The Standard version is rather quiet, too, yet the extra measures would make it unrivalled in its price segment in terms of noiselessness. Users who need better cooling or lower price will prefer other products anyway whereas the key advantage of the Gekkou design is not so clear in the Standard version.