I use 2 goose down pillows per side (2 for me, 2 for Steve) plus my body pillow. I am a tummy/side-combo sleeper. My bed is like a nest, lol! Goose down mattress topper (feather bed), goose down duvet... but I love it all. It keeps you cool in summer, warm in winter. Bamboo sheets & satin pillowcases too. They help make what I consider the perfect bed. =)
I have one and love it in the winter. I cannot use it in the summer. The contour that goes up under the back of your neck hugs so closely that the air doesn't circulate and the back of my neck gets all sweaty when it's hot. If you're somebody who runs the AC at night, then I think it would be ok, otherwise it gets pretty uncomfortable.