A down pillow with a 100% down filling will feel similar to floating on a cloud and is the most natural filling material you can get. Yet, many down pillows also offer a ratio whereby they have a percentage of down filling and a portion of other feather types. These will not provide the exact comfort of a 100% pillow type and won't, therefore, be as soft. Yet, many people still find the ratio pillow types comfortable and fluffy. It may very well depend on your personal preference here. Sometimes, the only visible difference is the price between these two types!