My partner has had his Buckwheat Hull Pillow for several years now and loves it. We're very skeptical about alternative treatments and health claims so we don't think things are wonderful because they are organic or natural - they need to work!
He reckons the major advantage of this pillow is that it stays cool. He used to wake up regularly and turn his pillow over to sleep on the cool side. He doesn't need to do this any more.
He finds it very comfortable and wouldn't go back to a normal pillow.