:)
Again I'm just going by what I have seen. I've got a 1080 LG prjector in the games room, and although you'll never get the contrast ratio or brightness of a TV pannel, in 720p I can't notice and grainyness or difference in quality or detail in either mode unless I go over 60" as I've had a play. That said projectors are a whole different kettle of fish
I've got a lot of blu rays though, and most say 720p, so imho 1080 on these is just trying to fill in the blanks, I don't think it can add detail that isn't their.
Anyways I will shut up now :)