In my experience 'sid' is what you typically use on desktops, 'testing' on servers you actively maintain, and 'stable' for servers that you just want to keep ru

In my experience 'sid' is what you typically use on desktops, 'testing' on servers you actively maintain, and 'stable' for servers that you just want to keep running without much fuss. 'sid' can have some interim issues, but nothing significant enough that it would disqualify it from desktop use; and 'testing' is really solid already for those who don't feel like power users much.