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I use what you do except for Pinterest. It has been suggested to me here on AR that I start using Pinterest.
I use Linkedin, Pinterest, Twitter, and Google Plus. I have received action from Linkedin and Pinterest.
I think Instragram is not the hot thing instead of Pinterest! (I try to keep up:))
Depending on the audience
Facebook personal or one of two business pages or a group.
Linkedin, sometimes main page, sometimes a particular group.
Pinterest is always effective, especially with the college kids for rentals and recruiting.
Twitter, seems useless, but apparently some people use it and it's good for seo links