@unknownuser said:
And finally seems Blender or Sculptris has Vertex Paint mode for 0 $
Blender has vertex painting ... somehow LOL. Sculptris no vertex painting at all. It automatically unwraps UVs, it's direct texture painting method.
3dcoat implemented vertex painting recently (directly on voxel meshes) and costs ~$350 , educational version at ~$99 ( it does a lot more things than just painting)
Yeah, direct vertex painting. Quality depends on the resolution of mesh. For a equivalent to a 2024x2024 pix map, a ~4M mesh is needed. A ~8M is even better. Here, zbrush is the winner. Millions of poly running on a cheap hardware. In any case, for exporting all these, you have to retopo-decimate the mesh, make UVs, bake on textures.