Advice on low power XCP-NG hosts

I’m looking for some low powered, low cost NUCs or similar device to primarily act as a docker host and maybe run a VM for homebridge. I’m also exploring creating a HA cluster with 3 devices.

Right now I have these services running on high powered desktop CPU and would like to move my “critical” services to something with less power draw and maybe some redundancy.

xcp-ng has a blog post about running the hypervisor or odroid h2+ and h3 devices but I don’t have any experience with odroid devices. Any recommendations on odroid or other lower power options?