I don't like hermits-to me, they are just a waste, cause you can get snails that do the exact same thing, but snails don't kill things.
depending on tank size, I'd get a couple of turbos when you start getting alot of algae, and nassirus snails for the sandbed. Then, a couple of peppermint shrimp for the eating of leftovers duty...
and maybe ONE hermit if you find one that you just NEED