Hi NRJ,
The only way to make meaningful comparisons between mattresses is by knowing all the specifics of the materials and components in two mattresses and brand comparisons are mostly meaningless. I don’t see the specifics of the layers in the links you provided and I don’t know the details of the specific mattresses you are comparing it to so I can’t make any meaningful comments about any of them.
There would probably be a fairly thin layer of gel material on top (which is the most costly material in the mattress) and the rest of the mattress is polyfoam which is less costly material than good quality memory foam and especially good quality latex so I wouldn’t put it in the same range as a mattress that used more costly materials in terms of value.
I think that most latex manufacturers would strongly dispute the statistics they include in their static fatigue comparisons which appear to be very misleading to me (latex doesn’t lose firmness or height to nearly the degree they indicate). If you look at the latexco site here and click on durability or on the Latex International site here you will get a better picture of latex durability.
I’m not familiar with pricing in Europe and I have no knowledge of the market there (and I would need the specifics of each mattress you are comparing as well) but your own personal value equation is the best way to compare the relative “value” of a mattress purchase (the “value” of a mattress purchase would depend on all the objective, subjective, and intangible benefits and criteria that are most important to you).
I’m guessing the specs would probably be similar to the specs in post #2 here and you can see some of my general thoughts about the Technogel mattresses in post #2 here.
Pure gel materials are generally more effective at conducting heat than gel infused foams that only contain a percentage of gel so in terms of cooling and thermal conduction it would likely be effective although ventilation and moisture wicking is the most important factor in controlling temperature (you can read more about the factors involved in temperature regulation in post #2 here). I doubt that this would be a hot sleeping mattress.
Phoenix