Gold 100s strong points are its true colors with good saturation and its sharpness. Grain is decent as long as prints dont get too big. Bringing it down to PGI 42 makes it similar in grain to the new current Portra 400VC film. I would suspect GA 100 is sharper. I would not go as far as to say its like an 800 film. I dont think any 800 film is less grainy then PGI 42 (or even the old PGI 45).