Keith
The best camera is one that still works!
True enough! I bought the D700 for the high iso performance, thinking it would save me lugging a tripod around. However the weight of the camera made up for the lack of tripod, or made me want to use it with a tripod. Plus I find it hard to get out of the 'keep the iso low' habit.
It is true though, I have a fair amount of 6400 shots and the noise control is remarkable.
I made that statement as someone who went from an M8 to a D700 because high ISO performance suddenly became paramount and the Leica was driving me insane.
That said ... the M8 is a brilliant camera in it's own right but I warn you the 35mm f1.2 Nokton is a must have for this camera IMO ... they are a match made in heaven! 😀