I have only had my Hybrid Pillow for a couple of weeks so I am keeping my options open on the 30-day trial period. I am hopeful though that it is here to stay. It is quite different from the pillows I have been used to. I have always slept on two for many years! I have only given 4 stars but I am hopeful that by the end of the 30-days it will be with me to stay and I will then be giving it 5 stars.