One more thing to be aware of while you are probably still in the return period…
The Samsung Wi-Fi mesh systems are unusual in that they can only work when you have an active Internet connection. That is not true of most Wi-Fi mesh systems, such as eero or ubiquity: those will be able to continue to run a local Wi-Fi network even without Internet. But with the Samsung systems, if the Internet goes out, the Wi-Fi also goes off.
That may not matter to you, but it does affect some people who are running local Wi-Fi applications like apple’s HomeKit. So it’s just something to be aware of since it is unusual to have this limitation in a Wi-Fi mesh system. 
Also, Samsung has decided to stop manufacturing smartthings branded hardware. They have signed up partner companies from multiple regions for many of their hub models, but so far no one for the Wi-Fi mesh systems. They haven’t officially announced that it is “end of life” but it already is several firmware updates behind the other hub models and no promises that it will continue to operate in the future.
So speaking just for myself, personally, I would not be buying this model at this time, at least until they have found a hardware partner for it.
Announcement | Changes to our Legacy SmartThings Platform
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An Update Regarding our Hardware