Just to give another viewpoint, I have the same Coop pillow and I didn't like it. It feels "airy" for lack of a better word, like it's not really supporting your head / neck. I feel like I can't relax and put my full weight on it. It's hard to explain. I've tried different fill levels. Maybe it's just a 'me' problem. It just didn't feel like other pillows in an unnatural way (to me).

They have a decent return policy though, so you can try it for yourself.