We've had a little over a week with the new mattress. Overall like the feel of it - not too soft or firm. Generally comfortable.

One big issue, though. It is a HOT sleeper! Helix says is included an "ultra breathable TENCEL cover designed for maximum airflow," but it feels like it holds heat similar to a memory foam mattress. 

We're on the fence if we'll keep it. I've woken up sweaty a few times now and we keep our AC relatively cool. That's never a good feeling. This was not a problem with our old Beauty Rest.