I'd definitely go for the silver. The black ones are beautiful too, but they don't seem all that "special." The silver ones are hot, they're probably just as versatile as the black, and they're unique.
I love, love, love the silver MJs. That's probably my dream shoe. The red peep toes are hot as well. You'd be surprised how much wear you get out of red shoes. I have almost as many red shoes in my closet as black and I wear them just as much if not more.
But either way, you can't lose. They're all great shoes.