KitGuru tried the Corsair Obsidian 500D Chassis
A quote from the article:
The first thing we did after unboxing the Corsair Obsidian 500D was to wonder when we last reviewed a Corsair Obsidian case. A quick check of the KitGuru archives told us it was the Obsidian 450D back in February 2014 which is a massive gulf of four years. As we say in our video, the 450D and 500D model codes suggest the new Obsidian may have a certain amount in common with the previous 450D however a lot of water has passed under that particular bridge. Both cases are black in colour and mid-tower ATX in size, and that is pretty much the end of the matter.Corsair Obsidian 500D Chassis Review @ KitGuru
The new 500D dispenses with optical drive bays, gains a power supply cover and has a clean, open interior that promises superb air flow, while the outside is finished with a pair of tempered glass doors with aluminium panels. You would need to have a heart of stone to deny the Obsidian 500D is a smart and attractive case, and we have no doubt some Luddites will applaud the absence of RGB lighting. As we say in our headline, this case is intended for adults.