I try to stack mostly 1 Troy oz Golds to keep down the premium per oz. However I do have some gold in 1/2 and 1/4 Troy oz sizes too. I never purchased the 1 gm size. Personally if I were to spend a 1gm Au why not 3 Troy oz Ag instead, assuming a 1/93 G/S ratio.
I agree I just got the little one for the aww factor it's not really a great investment with such a high premium, I'm sticking to the ozers