Like the other reviewer said, these are not as dense as other memory foam pillows, so either that's good for you or not. My head sinks into it just fine, no neck issues and a present nights sleep. Things to aware of: they are cheap memory foam material and as such, smell awful when you get them - let them air out in the sun or a warm room. They also cling to pillow cases making them a challenge to put a case on. They yellow over time and start smelling again (mine are a year old and gold now).
I have sleep apnea and a C-pap machine. I find this pillow very comfortable with the head gear. The pillow has held up very well- I have had it for several years. I gave the other pillow to my son because of neck issues and he loves it too. Now my husband wants one! Will be buying these again!