S.E.
Feathers are feathers. Duck feathers are smaller than goose feathers but are really the same but goose down is better than duck down. Goose down is fluffier and higher quality. Feathers can jab through the fabric and poke you where down is the soft part (breast) of a goose or duck. Most beds just have a down topper. I do not currently have a feather bed but grew up where we raised ducks and geese and still have the goose down pillows.
We have a Select Comfort - Sleep Number Bed and love it. Took away my back problems. My husband says he sleeps better now than he ever slept on a inter spring mattress. Good Luck on your search.