Thanks for posting this explanation and comparison shots. Its helpful to understand this stuff more clearly now.

This is tricky: I can see pros and cons for each. Without the modified G-force script and anti-aliasing you get more grit and a much reduced presence within the image but a touch more detail amongst the grit. With the G-force and anti-aliasing you get a less distorted and more lifelike image which is pleasing to the eye in some ways but is also a little too smooth and plastic-y to the eye also. This is a tough call to make - I think I'd have to watch the same clip with each setting over and over to see which my eyes tire of/adjust to more, to have a clear either/or position on this.