they are all super sharp...
but what you forget is crop factor...
the x100 is an APS-C and the 6d is full frame.
So a 35mm on the x100 is 56mm equivalent on the FF 6d.
So you prob want to look at 50mm or the zoom...
acually the x100 is a 35mm equivalent (23mm on crop)
But I get everyones point
I think faster is important and zooming with my feet is something im used to
so 35 f/1.4 is probably the best choise for me
that still leaves me with 3 choices : the new sigma, the canon L or wait for a new 35L (anytime soon?)
I guess we will have to see if the new sigma is as good as they claim