After trying several other pillow types, including traditional cotton, memory foam, and synthetic down, I was left still searching for the ideal pillow.
The latex pillow matches very closely to what I was looking for. It retains its shape through the whole night and after weeks of use. It doesn't deform or clump, ever. It remains at a comfortable temperature and consistent firmness.
While I can't compare it to the other firmness options available, I can say the medium density pillow seems like the right amount of firmness for me. It's comfortably squeezable; it deforms just enough that my head feels "in-place" without feeling like it's in a hole. I'm not sleeping on a rock, but it's not so soft that the pillow bottoms-out completely.
I'm very happy with my purchase, and I would make it again.