You specifically posted about Th8rne floors.
I would reckon that the stainless steel mesh from the mesh co is as good as you need and should last longer. Some wasps can get through some expanded steel (not a problem for a hive, except in very unusual circumstances I would think), but needs to be considered when covering stores within the apiary! BTDT!
The woven mesh may be easier to damage (eg if a hive is dropped on something sharp while transporting), but so far I have had no problems on that score.
As TB(?) said the expanded mesh gives extra rigidity to the floors and is easy (when buying from Th8rne) as it can be used to 'square up' floor timber at the assembly stage.
Roundabouts and swings, but the mesh co are definitely good value when approached outside the "'small order' through epay" and I will deal with them again, next time I need a pile of mesh squares.
RAB