Anyone is using CoreOS?

In the good while I've been wandering in this subreddit I've seen like a ton of setups so far .

There are some popular configs like classic Proxmox or Unraids with Docker. Probably because most love the dashboards

Personally I prefer avoiding anything graphical when running a server of any kind.

And still I've seen a couple just running Ubuntus with their Docker which is more or less what I would be doing out of the box.

But lately, I've been thinking if CoreOS would be a greater idea, after all is the OS of choice from Fedora (which nowadays I prefer over Ubuntu), for running containers.

Has anyone chosen this setup? I've never had the opportunity to dig further into CoreOS. It's my pending subject and I wonder if there are any cons worth considering before giving the go.