I have the same Purple Hybrid and I love it. We had a Nest mattress before, and it was very comfortable too. It just sleep hot. My wife liked the warmth, but I would wake up soaked in sweat. I don't have that issue anymore with the Purple. It is interesting someone said that the mattress breaks down other than the polymer portion. I do have a bit of an issue with where I sit with my feet off the bed starting to lose its shape. Not a deal-breaker, and I kind of expect that it would be covered up the warrantee. It will be a year old next month for us.
We added an egg crate type thing on my wife's side to allow her to sleep warmer, and that solved it for her.