For a more interesting, more realistic finish, add a Granite node, like this, connected to the Specular_Value of the two specular effects. On the Blinn this is called Reflectivity. Set the Balance on it up or down as you like. I used .7.

Use of nodes like Granite is always good to increase realism. The utter perfection of perfect specularity is always disturbing. I always add little variations to a shader. Look closely at the stairs and you'll see they are not perfectly smooth.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)