What is the best software package to complement UE4?

I would change, in my opinion:

Animation and rigging – Maya

Painting/Texturing/Texture creation – Substances

UV Map/ID Map creation – 3D Coat

Hard Surface Modelling - MODO

Sculpting - ZBrush

Terrain generation – Houdini FX

Assets – Kinect scans(?) (never made megascans) and various stores like Unreal Marketplace

Procedurals and FX - Houdini