pfSense vs Docker vs RouterOS: Maintenance and security wise?

Hi all,

I am having a hard time finding what's best in terms of maintainability and security for a single homelab router:

• Low energy x86 machine with pfSense

• Low energy x86 machine with Docker containers: Kea, unbound, nftables, etc.

• MicroTik RouterBoard with RouterOS

Configuration time or hardware costs are not a factor. What is your opinion?

Thank you in advance!