alt Hacker NewsThe Cloud Key Gen 2 is underpowered depending what you do with it, and it runs hot. UniFi seriously needs to refresh it. (At least it’s better than the Gen 1. The Gen 1 was disastrously bad.)
The ENAS looks like fairly nice hardware. It even has ECC RAM. Not cheap, though.
Considering how long it has been I don't think we will ever see a Cloud Key Gen 3/3+.
Ubiquiti's Cloud Gateway Max or Fiber seems to be the modern replacement since they do the job of the Cloud Key while also serving as your router and firewall.