I have been using a feather filled pillow for many years. I wash it regularly and it is holding up well. If I was to switch it would probably weigh on my mind as I tried to fall asleep and I wouldn't be able to. I'm a creature of habit I guess.
I have a couple regular size down pillow, and a foam one. Also have a couple of those small pillows like you get on an airline. Give me good neck support'