Down will be very soft, but will require very regular plumping. Feather will be firmer and not quite as soft, but generally will require less plumping. You could also look at memory foam pillows or hotel quality microfibre ones as well.
Personally I have 80/20 Feather/Down 1200GSM pillows on the bottom and then 100% Down pillows on top of them (yes I use two pillows).
I currently have some real janky pillows and I'm sick of waking up with a bad neck. I've never bought decent pillows before so can anyone recommend some decent ones, brands etc please?
Thanks
Tempur. You'll be glad you spent the monies.
John Lewis Superior Siberian Goose Down Pillow.