This is probably 6-7 stars. I haven’t slept so good in over a year probably more. I wasn’t sure if I wanted gel memory foam with the topper. I can’t tell you what it would be like with this topper. What I can tell you is that my king size mattress was amazing for the first couple years,... now going on four years. It’s horrible,.. I am so glad this product was available so I didn’t have to toss 1k mattress and replace it. I almost did. This was my last resort before blowing more money. I am so glad I did too. Speaking of good, no, amazing sleep,... goodnight. Sincerely, one very happy camper!!