I have a down feather bed, down pillow and down blanket, and I LOVE THEM!! My mom sells down products, so that's where I got mine.
I do know, from my mom, that you should pay attention to the percentage of "down" that are in them, as a lot of the less expensive ones (and some expensive brands) include a large percentage of feathers which aren't as comfortable..... sometimes the shaft pokes out of the pillow.
Anyway, if you have any specific questions you want answered, PM me, and I can see if my mom can answer them.