If I am only allowed 11 items and there are Ten Essentials which should be taken on every hike, then I guess that leaves me only one more item beyond those ten, right? If so, then I choose a PLB.

More seriously, I may yet take a bit of time coming up with a list, but whatever I put on it, I will never take only eleven items, because there will never, ever be a need to confine my choices that drastically. On the contrary, if I voluntarily took so few items I would be unnecessarily endangering myself.