The #1 smart mattress? Eight Sleep makes smart sleep products with patented technology designed to help you fall asleep faster and stay asleep.
The Eight Sleep has completely transformed not only my sleep itself but the way I look at sleep habits. In the ~month that I've been using it I've fallen asleep faster and watched as my sleep metrics (like heart rate and body temperature) improve as I follow the bed's recommendations. It's also great that both sides are cooled/heated independently, so my partner can sleep differently than I do.
Their customer service wasn't phenomenal - I tried asking some questions about best practices and had a really hard time getting answers/help from them.