Which is the better camera?

Hey everyone! I'm finally ditching my Nikon D200 and I'm looking for some a new camera to replace it. Over the years my D200 has been heavy and obtrusive, I really need something small and light, but also very capable. Image quality and ISO performance are a must. I'm currently looking at either the NEX 3, Fujifilm X20, or the Fujifilm X-A1! I'm really leaning towards the X-A1, it looks like a wonderful camera, despite the omission of a viewfinder.

I'd love to hear what you have to say! Also, I hope everyone has enjoyed the holidays!