Best Zbrush material for Maya diffuse textures?

[Brutes]

Hello peoples, I am currently working on a project inside Zbrush and Maya. I have question about poly painting on top of a Zbrush material (Like BasicMaterial, MatCap Gray, Flat Color).

I know that you cannot export these materials, my question is which is the best material to use while creating diffuse textures and get the same result when you export the texture for Maya? (As the material effects the look of the texture inside Zbrush)

I have a feeling it is the "Flat Color" material but i'm hoping some one more experienced can clarify that as I am on a tight deadline and would rather not take any unnecessary risks.

Thanks