I know everyone has their own opinions of them but I’m a fan for what they are. Right now I have 3 of them that I’ve gathered over the years (one with ESXi hosting my firewall, one with TrueNas for backups, and one with ProxMox for a few LXCs).

Overall, they are great little boxes, I had three of them in my living room for years when I was renting and they were pretty much completely silent after boot. The dual core celeron that comes with it works, but can be upgraded to a Xeon e3-1265l v2 (quad core + HT) for $25-50. RAM I think maxes at 16GB, but if you want a box to run a dozen light services or so, its not a bad box (insanely quiet and pretty power efficient).