I just installed armbian buster on my NAS (odroid HC2). Everything works perfectly.
However, as debian bullseye has become stable and I expect this to happen for armbian also in the near future, I am thinking about how to do the upgrade. This is mainly because all my other boxes run bullseye and administration becomes a lot easier if all systems run the same version. In addition, I will have to do the update anyways at some point in time and therefor I want do it when armbian bullsey