Thanks Godfrey, that helps me. I think I am leaning towards the fujifilm cameras because of better AF and MF and also because of better lens selection currently and a clear lens road map. It's a shame the video is apparently not very good, but I think I want to see how the Sony system matures in the next couple of years and how responsive they are with lenses and firmware updates.
I bought the A7 specifically and only to work with my Leica R and Nikkor SLR lenses, so the native lens selection, AF, etc are irrelevant to my purposes. Adapting these wonderful lenses to small format cameras had become tiresome, the Leica lenses in particular are so carefully tuned for a 35mm format frame that much is lost when you cut the format size down. I was looking for a good FF sensor in a not-overly-bulky body with a great viewfinder—and that's a perfect description of the A7. It works brilliantly as my "one-size-fits-all" body for prized, manual focus SLR lenses.
I'm not crazy about Fuji bodies due to their sensor, amongst other reasons. I find the Xtrans sensor's output to raw format is somewhat problematic with regards to raw conversion. Yes, Adobe and others have finally come up with decent algorithms for it, but the same amount of energy expended towards more traditional Bayer mosaic sensors nets even more gains. I just don't see the point of the tetchy processing issues in any of the photos I've seen from them, I get the same or better results out of Sony APS-C and Olympus/Panasonic Micro-FourThirds sensors, never mind FF sensors.
For the best lens availability, body performance, overall sophistication, and image quality in a compact, full-system camera, my pick is the Olympus E-M1. This is a great performing camera with great lenses that is supremely adaptable and responsive. Fast AF, fast operation, excellent ergonomics, incredibly configurable, etc. I have a full kit with all mFT and FT lenses for it and, IMO, nothing else comes close at the present time for a fully expressed modern system in this size class.
A Nikon D800 and hand-picked kit of Nikon' and Zeiss' very best lenses would be the same thing at an up-market, larger format scale, but scale up your expenditure and the size/weight of what you need to carry by a factor of two to three if you want to go that route...
G