A pound and a half of Michael's (cigarnut) beads will keep an Edgestar right on the money for a lifetime.
The other beads work great, too, but they have a lifespan. It's kinda pay me now or pay me later. Add to it that the shilala beads recover way faster and hold lots more water, and it's pretty much a no brainer.
I guess it's not so much of a no brainer if your old lady is already fixin to kill you, though.