Great discussion so far.
I'm sure experience filmmakers , dps and so on like the people on board may be able to spot the difference from HD and film.
But to be frank, non-filmmakers, the general public do not even know or care about it as long as the story is good.
When I was a regular movie goer, I don't look at the lighting, framing etc as I have no knowledge on that, which applies to 99% of the cinema goers. I just want to watch an entertaining film.
In fact, I have some people coming up and says HD is superior as it is a newer technology. I know this isn't true, but the fact is, the general audience would not know their difference unless they are educated on that.
So I do agree that we should aim for the highest production value possible, but this argument is not as important to the general audience..
I have not heard of anyone saying Star Wars should have been shot on film, why didn't they do it by the public in general. Only from filmmakers that this argument arises. So my point is, shoot on whatever you are comfortable with, as our main target audiences are the general public, and they won't know unless both footages are put side by side.