I was looking for a super king sized duvet as a spare, and to accommodate visitors who might have allergies.
As it happens I also ordered a goose down super king size from the same company for our own bed, but the order was cancelled by the supplier due to stock problems, because of this I have used this myself, and have to say for the money, it's a steal.
It's a good size to fill the cover, unlike a down duvet I'd previously purchased from a high street store; and it's light yet not insubstantial to lie over you. The tog value is nice and warm, even in our snowy/below freezing outside conditions at the moment and it feels reasonably 'snuggly'.
So, all things considered, I don't think you can go wrong with this item.