Hey Talex, congrats - it's a nice camera! I use my M8.2 without reservation next to the M9 and love it.
I am not sure, if this works, but I believe, the later firmware updates on the M8 enabled "discreet mode" with the M8 as well (is this correct?).
You can keep the shutter release pressed after the exposure, to delay the shutter cocking noise - just the "clack" remains during the exposure of course.
I really like ISO speed changing on the M8 actually and largely prefer it over the way, it works on the M9.
With the M8, you just do this:
- press set button twice
- press up or down for each stop of ISO speed up or down, you need
- press set button once
(take a glance at the screen, if needed, to check, if ISO speed has been set, as intended)
This is much quicker and easier, than changing ISO on the D700 + I find it more intuitive than on the M9.