Your M8 bias is showing again.
Difference between:
Film M vs M8/M8.2 You say "quite"; I'd say massive.
Difference between M9 and M240; you say "big" and I agree.
Difference between M8/M8.2 and M9; you say "massive." Really? I'd say easily the least difference of all comparisons here, with primarily the same but bigger sensor, with a thin filter.
Never mind my thoughts; at least knowledgeable folks like Puts agree that the difference is not big,
as he recently writes here. In fact he says "
The M9 and M9P and M8/M8.2 share the same basic sensor and when used at identical distances the pixel pitch and image magnification are identical. It is no surprise that both cameras perform in the same league.... If you want to be very critical you might say that the M8.2 has the upper hand....The widespread opinion that the M8 is inferior to the M9 is not correct."
Jeff