Upload & Sell: Off
Just to be another voice in the crowd....
.. am currently on the initial weeks of switching from a Canon 1DmkII to the A7. IQ seems to be quite a bit better, noise quality lower, of course focusing so far and speed of shooting, adjusting everything, etc. has been the biggest change.
The Metabones III is giving me AF w/ my 70-200L, only manual focus with my 28-70/2.8L, and is too tight and therefore incompatible with my 17-35/2.8L. B&H is sending me another copy of the Metabones to see if it is looser and has part-to-part variability, but it's a bit scary when my entire glass inventory is dependent on the Metabones. The 550ex flash is also triggerable but completely manual, so all-in-all I think it requires a slow transition of all the lens/accessories to Sony over time. In other words, the low-cost appeal of transitioning to this non-Canon system seems to only be temporary and not a permanent solution...
Just my $0.02 based on 2 weeks of use.