I’ve got both Samba and NFS set up. I’d say Samba is the most versatile, just because more devices are bound to be compatible with it out of the box. I have an app on my phone I can use to connect to it, for example. And it obviously works with Windows machines. NFS is very simple to set up and nice and speedy. But I only use it for a couple permanent shares for specific things between Linux machines. You could always use a mix. I have a directory that’s shared with both.
I’ve never configured Kerberos I think, might’ve tried once in the past. From what I understand it’s a pain to set up and really more useful for enterprise environments. But could be fun to configure if you’re into tinkering with that sort of thing.