Things like a bed and pillow are so specific to a person that, IMO, reading reviews from other people is largely an aimless pursuit. It's a bit like asking, _will that shirt look good on me?_ and taking someone's answer of _it looks good on me_ as a confirmation.
About the Purple mattress I will say: it is very heavy and difficult to move. And that grid stuff will last roughly forever. The only other non-personalized advice I would give about it is to feel an actual mattress, not a sample and not a pillow. The effect of the grid feels different when it's mattress-sized and with all the other layers, so the effect might not be what you're expecting if your only experience is a pillow or sample.
About the Purple mattress I will say: it is very heavy and difficult to move. And that grid stuff will last roughly forever. The only other non-personalized advice I would give about it is to feel an actual mattress, not a sample and not a pillow. The effect of the grid feels different when it's mattress-sized and with all the other layers, so the effect might not be what you're expecting if your only experience is a pillow or sample.