I have quite a few of the AAA markers and they are expensive, plus the little tabs have been broken off on several of them, making them practically useless. Now I have switched to the Paw-Paw Everlast metal marker, printing my own labels and protecting them with clear sealer. Just started doing this so can't comment on the longevity yet.
I have begun burying labels with my plants as well. Cats and squirrels, deer and other creatures (insert DH here) have a way of pulling them out and scattering them about or stepping on them and breaking the plastic markers from Lowe's or HD, so that's money wasted. I do use the white plastic markers for plants I'm donating to sales or giving away.