A good thing thing about Nextcloud is that by learning one tool, you get a full suite of collaboration apps: sync, file sharing, calendar, notes, collectives, office (via Collabora or OnlyOffice), and more. These features are pretty good, plus, you get things like photo management and Talk, which are decent.

Sure, some people might argue that there are specialized tools for each of these functions. And that’s true. But the tradeoff is that you'd need to manage a lot more with individual services. With Nextcloud, you get a unified platform that might be good enough to run a company, even if it’s not very fast and some features might have bugs.

The AIO has addressed issues like update management and reliability, it been very good in my experience. You get a fully tested, ready-to-go package from Nextcloud.

That said, I wonder, if the platform were rewritten in a more performance-efficient language than PHP, with a simplified codebase and trimmed-down features, would it run faster? The UI could also be more polished (see Synology DSM web interface). The interface in Synology looks really nice!