I think it is up to you, you can always return that mesh if you uninstall it. If you do not see any difference with/without the mesh from ORBX you can remove it. I do not know which mesh is better detailed and accurate, however, ORBX has some good experience with them, and if Asobo did not work specially on a mesh for NZ i’d keep the product from ORBX for a while until there is more information, because Asobo’s current technology is not always good for meshes, at least for my home region (URMN) the default mesh is not good at many places.