I regret getting a UDM-Pro and recently swapped it for an n5105 OPNsense box. Luckily they keep their value, so I didn’t lose any money on the UDMP.

Setting up a full k8s cluster (vanilla k8s, not k3s etc.) and running most of my self-hosted apps in that cluster caused me a lot of headaches but also got me an immense amount of knowledge and experience.