Hi, jamestaylor -- I have tried all kinds of pillows, from expensive down, to down-and-feather combos, to polyfiberfill of different densities, to a special CPAP pillow with side cutouts, etc (which was miserable for me). I settled happily on a foam rubber pillow, medium-soft, that is thick/high enough to support my head with my spine pretty straight, and since I sleep with a full-face mask and have to sleep on my side, I just sleep with my face toward the edge of the pillow. My head's weight is fully supported, and the curve-off of the end of the pillow causes little pressure on the mask, and I sleep much, much better. I have heard some people love buckwheat-hull, as a poster says above, or even flax-seed pillows, and some make their own pillows, but a regular foam-rubber one works so well for me I actually travel with my own pillow now. I would start with assessing how the person sleeps and what their doctor recommends about positional changes, and then experiment from there.
