I am throwing in another vote for feathered friends. I believe we have the arctic baffled box 700. We have had it for about 10 years now, and it is as wonderful as the day we bought it. A lot of down is really unethical, but FF uses ethically sourced down. Their products are made in the USA. Their down is also treated to be hypoallergenic. I have terrible allergies, and FF is the only down I have been able to us as bedding. I wash my comforter a little more often than recommended because of my allergies, and it is holding up so well. I also have one of their down pillows, which I also love.

TLDR: feathered friends not only has very high quality down products but is also a company you can feel good supporting