An expensive mattress that has proven to be disappointing

We purchased this mattress about two years ago. It was more expensive than other options but we heard about the "new technology" and the salesperson recommended it. it seemed to be comfortable at forst but after a few months, it no longer seemed to support either of us and we started waking up "achey". Not sure why but I don't think tyhat the foam coild stand up well over time. We would definately not recommend this bed - it is expensive and while it may feel good initially, it will very likely become softer and less supportive over time.