the first thing that popped into my mind re: the OP subject was what many have already
commented on: my M8 & M9-P were heavier and bigger than my M6: what a disappointment.
I had flashbacks of when the DigiLux 1 and 2 came out: I was expecting a smaller/lighter package,but no dice.
However, the MAIN difference in "feel" was the shutter sound, or the "shudder sound" I should say
of the M8/M9/ "WHIZZZ, CLANG, CLUMP!!". Horrendous compared to any film M.
I am told by one RFF member that the latest digi-Ms (the M240 and M-E are much quieter ).