Hi stuuke,
Assuming that the materials in a mattress you are considering are durable enough for your body type and meet the quality/durability guidelines here relative to your weight range … the choice between different types and combinations of materials and components or different types of mattresses are more of a preference and a budget choice than a “better/worse” choice (see this article).
Microcoils are only one of many components in a mattress but by themselves they are a durable component. There is more about microcoils that are used in comfort layers in this article and in post #8 here and post #2 here.
[quote]From their website description
Outlast performance fabric
HydroPur Silver FR barrier
1.5″ convoluted foam
1.5″ convoluted foam
comfort layers:
1.5″ convoluted foam
foam-encased 3″ Softech micro fabric encased innerspring
744 coils in a Queen
930 coils in a King
support system:
8" fabric encased Body Print Advanced innerspring unit
858 coils in a Queen
1056 coils in a King
Foam encased edge support[/quote]
While the microcoils themselves are a durable component … there is 4.5" of “unknown density” polyfoam in the top layers of this mattress so unless you can confirm that the density would meet the durability guidelines I linked in my previous reply I would avoid it because the polyfoam layers could be a weak link in the mattress that would be very likely compromise the durability and useful life of the mattress. Convoluted polyfoam will also be less durable than a solid layer of polyfoam that is the same density and firmness (see post #8 here).
Phoenix