The Ghostbed Flex is the most comfortable bed I have owned. The adjustable base is a big plus, especially if you like to read or watch TV in bed. I also bought the memory foam pillows and love them.
It is a great bed and I don't have much new information to add to the good reviews I read before buying. However, one thing I can speak on that might be helpful to others is Sleep Apnea. I have it very bad (90+ events per hour when untreated) and, even with CPAP maxed out and after trying bipap, I still couldn't break 20 events per hour even with a cpap and a miserable wedge pillow. The anti-snore setting on this bed instantly improved my AHI (according to my cpap) from around 20 per hour with a wedge pillow, cpap, and constant back pain to about 3 with just the cpap and resolved the back pain entirely (all while being truly comfortable). I am not a doctor and this is only one person's experience but, I've had doctors charge me far more and accomplish far less so, I figured it was worth sharing.
I have used my new Ghost Bed adjustable frame and mattress for just over two weeks now. It is great for watching tv, reading in bed and getting into a position to relieve back pain. I only wish the legs came up higher, I still put a pillow under my knees to keep them up higher. But that is a minor thing. The USB port for my phone is great and the nightlight under the bed helps me see to go to the bathroom in the night. The vibration is kinda loud especially on high and it can be heard in the other bedrooms, so I can only use that during the day if needed. All in All a great buy and I highly recommend them for their service, website and customer service too!