I have tried various pillows but always go back to feather. I find that they can be shaped to support my head and neck in a way that all these fancy expensive 'memory' foam ones can't do. I have also tried wool, and those polyester and solid foam ones, but they are too homogeneous in shape. I like something that can be moulded to the way I want it when I want it.
There was a fairly recent review of pillows for neck support in the Which magazine. You can look at it online or in a library. I bought the cheapest one (from John Lewis) and have found it's the best one I've ever had - there were more expensive ones too!
There was a recent post about this with lots of suggestions - if you put it in the search box you should get the thread.
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