Fuji X-Pro 1 vs Fuji X-E1 vs Sony NEX-7 vs Sony NEX-6 (struggling to choose!)

I travel a lot (90 days or so a year)...versatility as well as lightness are my main importance. I have considered Nex 7 as my travel camera. But in the end, I fall in love with my D Lux 5. I know it's a fix lens, but the picture quality is comparable with Nex 7 in generals if you will shoot a lot of still to slow moving objects.

2 issues I have learned about Nex 7: the video button which is too close to the shutter button and the whilst shooting video the camera would get hot and shut down.

I have also compared D Lux series with Panasonic LX series and although they look alike, the picture quality is very different..