OM-D EM-5 vs NEX-6 vs Pentax K5ii

Need to make a decision I have researched quite a bit and feel I have narrowed down the field to these 3 cameras.

Pentax K-5ii

I like the feel of Pentax k-5 ii and like the 18-135 weather sealed kit lense that comes with it. I found there was a bit of softness to the photos of the K-5 and feel that K-5ii would be almost the same in every respect based on the photos I have seen out there. I am also feeling that the series is starting to seem a bit dated. Having said that it is still a great quality camera and not even sure if at my level this should be a concern. Ultimately I would like a camera that I can grow with and the K-5ii probably best fits that bill.

Olympus OM-D E-M5

I like the portability factor of the Olympus OM-D E-M5. I also like the wide variety of lenses available for this camera. It too is weather sealed but there do not seem to be that many lenses that are weather sealed for it. The picture quality seems to be quite impressive as well. The only dislike I have of the camera is the smallish buttons and the fact that it just does not feel great in my hands. I also would have liked a built-in flash with the camera

NEX-6

I like the feel of the NEX-6. I like that it has wireless and video capabilities seem to outshine the other 2 cameras (a bonus but not a deal maker or breaker for me). It seem the most compact of the 3 cameras. Seems to be a bit less expensive and also has wireless which I feel is a nice feature. Focus peaking is also a nice feaure that I like with the NEX series. The lack of lenses out there for the NEX series is a strike against it though.

Any thoughts?