I have the same kinds of problems with pillows! I do have allergies and cannot sleep on down (duck feathers) so the filling has to be synthetic. But I have given myself torticollis from my neck being bent in the wrong position so many times!

I had a pillow like the one you bought in the pic but accidentally left it behind in Berlin when I visited there in 2010! So now I sleep on a nice soft one that feels like air. The memory foam pillows are too "hard" for me to sleep on. Sometimes I think it would be better to sleep right on the mattress with no pillow at all!