I currently have a Raven RVZ01, and while it's a fairly small case, it is, like the others, fairly shoddily built.
Anyone who happens to read this and is interested in a SFF case like this, I STRONGLY reccommend taking a look at the Dr. Zaber Sentry.
It just finished two and a half years of prototyping in conjunction with the SFF community, and launched on indigogo, where they made their minimum goal in 12 minutes and, three days later, are sitting at 700% backed.
It's 3 liters smaller than Silverstone's offerings, it's made of 1mm thick steel (and no plastic whatsoever), it's designed to be extemely easy to build in (the entire top gets removed to insert the GPU, and then secures it in place), and its minimalistic, industrial aesthetic puts any other case to shame.
Tom's Hardware, I would sorely love to see a review on this case; between the Sentry, the Ncase M1, and the Dan A4, there's an entire lineup of premium small form factor cases that blow commercial offerings out of the water.