(Among the other two other products this customer review text appears the same.)
After thorough search in Mattress stores, furniture stores and on the internet - and particularly quasi entirely on Amazon - to the products slatted frame + mattress + topper the decision was made on products from Ravensberger (ravensberger-matratzen.de). Ravensberger offers products in very, very many varieties and sizes. The quality of products supplied here (Delivery time 1 week after ordering, transport companies take phone contact for appointment) is spotless. The price / performance ratio must be ordered, an additional reason to buy here on Amazon. In a mattress mattress business were offered 1,000 euros (one in words) 1! The two sets of three for two people cost a total of 1,023 euros!
The slatted frame has in the shoulder and pelvic plate, the yield in all four directions in the horizontal.
The mattress has seven zones, the same allowances for different body zones.
The Topper is made entirely of viscoelastic material, which also adjusts to the body shape.
What should other buyers?
Which hardness to have the mattress? H3 is hard and here so desired. H2 is softer. H4 should be quite hard.
What features should have the slatted base? Starr is sufficient here. Made entirely of plates, adjustable or electrically are also possible.
How thick / firm should be the topper? Here plays as mattresses of RG value a role.
(Read: The higher the density, the quality / durable is the mattress.)
Medicott or cotton as a reference for mattress / topper? Here Medicott was chosen for reasons of hygiene.
(Costs per portion 10 euros more.)
Here we have the feeling to have "modern" bought technology and materials. All three products were further thought, refined and improved. The build quality is excellent! There is only a slight smell of plastic, which is almost completely gone after 3 days.
The most important question: How do you sleep?
Here is the answer: Very good. :-) We have done everything right for us. Lucky. ^^
BUT, everyone should clarify in advance for yourself how he sleeps at best. The choice of techniques and materials and variants is extremely high. Just this week here is from a discount store, a mattress (7 zones cover polyester, three layers: visco foam, foam, polyurethane foam) available for 129 Euro. That may be the right as an inexpensive alternative, but does not have it. And that's the fundamental problem when buying a place to sleep. One can spend many thousands of euros, yet still sleeping badly.