Love the X100, looking for something to complement it

Like many of you I have a love/hate relationship with the X100. Early on it was a lot of learning, but now it is my favorite camera. There is something about the pictures with this camera that's hard to describe. I especially like the way it automatically fills flash.

But, I do find that because of the fixed lens, I still need another camera, especially for portraits. Till now that has been my s95.

I would like to get another camera, so wanted to ask what interchangeable lens camera would you recommend to someone who loves their x100?

I tried a GH2, with several lens including the Oly 45, but never really liked the camera.