We own 4 of them. Hubby loves them, I think they are okay.
We both prefer the king size length- the standard length is a bit short, once you 'pouf' it.
You may know that they come in different firmnesses. We ordered two firm, but found the firm is a little too firm for our necks. We are more comfortable with the regular weight- even hubby who is 6 foot and stocky.
The firm pillows are good for therapeutics- like elevating the knees for sleep if you have a backache- that is how we use the firm ones now.
The pillows will hold their 'punched' position under your head for much of the night, but often I have to re-'punch' them a time or two before morning, as the neck support I need disappears.
I do have neck issues and have tried every kind of pillow out there, at one time or another over the years, so I am tougher than most to accommodate.
Would I buy them again? Probably not, but that doesn't mean you won't like them.