Hi Mauro.

I used Cycles engine and the new "Principled BSDF" shader with the so called unofficial 2.79 version of Blender.

It seems that the new Blender's PBR engine, that's still in initial stages, can offer very good results for metal and not only.

I can't say that its blazing fast as "Thea Render" or other "true" realtime engines, like Unreal 4 or the brand new InstantLight,
but all these new Blender's shaders offer great opportunity in order to obtain photo-realistic results.

For my test I have used the new, still unofficial, "Principled BSDF" shader that should be the first step towards the upcoming
"Eevee" render engine, the all brand new Blender's PBR engine.

Fortunately there are tons of very interesting tutorials about that stuff, from many very talented guys,
like for example Blender Guru at https://www.youtube.com/channel/UCOKHwx1VCdgnxwbjyb9Iu1g and many many others.

I hope that in the coming weeks I can test more in dept a new workflow :
Moi -> 3D-Coat -> Blender

See you.

Marco (mkdm)