Would never have any other!
We bought our first Baavet probably 5 or 6 years ago now. It is still as good as new - no shifting around or clumping of wool, no wool coming through the cover. We wouldn't contemplate any other type of duvet now - it's wonderfully warm in winter, (and we live in a cold house) and transitions perfectly through spring and autumn. Even in summer it's the most comfortable quilt I've ever slept under and I've had synthetic, feather and down duvets in the past. Nothing is remotely as good as a Baavet.