Should I update stateVersion

The thing is that I migrating everything isn’t the end of the world for me. I am still in the setup phase, I have like 10+ services to move (convert to Nix form) from my current/previous machine. I was actually planning on re-installing from scratch to test how declarative my config really is and which things I have configured manually.
So would switching to stateVersion 26.05 be valid choice then?
And btw are xx.05 the same thing as xx.11 or is there some difference (e.g. LTS)?

Yeah that’s the problem with big projects that a lot of people depend on, you can never really change stuff that made it out of testing.