Hellshade, I can't get a single shininess setting to work with all the planes. Seems they all have different levels. On top of that, some parts are much more glossy than others. Makes sense - fabric will be less shiny than metal. I like the level in your pic, not too shiny. I keep mine at default and some parts look chrome. See the cowling in this pic:

"Take the cylinder out of my kidneys,
The connecting rod out of my brain, my brain,
From out of my arse take the camshaft,
And assemble the engine again."