I hear what your saying about emulation & HD set up's Hungry Horace
And without them the continued interest in retro
would NOT be as significant as it is.
So I tried to answer this one based on hardware still used by my family as well, as opposed to virtual or other systems run ONLY by me
from a purpose formated multi platform games PC.
I have to admit to my OWN satisfaction I am torn between C64 & Spectrum versions of certain old school games.....but then again for pure nostalgia MAME lets me run old atari 2600
mind melters like centipede
so I am pushed to decide which gives me the biggest kick
Thats why I chose the number of household user option