I was struggling to sleep awaiting a hip replacement and so getting and being comfortable all through the night is hugely important for the next day.  I was using 5 pillows and exchanging them through the night as I changed position.  Then Panda was recommended to me and, although expensive, I purchased one.  From night one of its use I was down to 2 pillows (the second for between the knees) and just the Panda for my head.  Instant relief and the first great night's sleep in months.  Nothing to beat it and totally worth the investment, a good nights sleep and no neck pain.