I've never really enjoyed down cushions on a functional everyday couch. Feathers inevitably make they're way out of the pillow, through the cushion's exterior fabric and into your back/arm/leg/etc... or just around the room. They lose loft and aren't as easy to replace as say cutting a piece or two of foam and inserting those. My current couch has a down cushion on the top of the seated part and backrest and when they go I'll replace them with memory foam.