Hi Warder45,
There is more about some of the differences between a latex support core and an innerspring support core in post #2 here but the choice between them would really be a preference and/or a budget choice rather than a “better/worse” choice because both of them are durable materials…
“In theory” most latex support cores would probably tend to be more durable than most innerspring support cores but in practice the difference is probably much less meaningful because the the deeper support layers or components in a mattress aren’t generally the weakest link in a mattress and the upper layers of a mattress are generally the weakest link in terms of the durability and useful life of the mattress.
In other words … in terms of the durability and useful life of a mattress there would be no reason for concern with either innersprings or latex in the support core of a mattress.
Phoenix.