I had a buckwheat pillow once and it was kind of crap. Honestly it doesn’t really matter what you get if they’re comfortable. You just got to replace them regularly. Like once a year. Washing them can help with allergy issues, but that foam is never going to return to its original state no matter how well you wash and dry it. You could always try getting something more organic so that you don’t end up filling a landfill with foam all the time, but I mean we’re already scrotum deep in microplastics (look it up) so I don’t know if it matters at this point.