I love this expression. I can't really describe it, but it's pure Lore and you captured it perfectly.... OH! Disdain. Total mocking disdain for all us biological life-forms. Because we are at fault for all of his issues . Anyway, this is great.
Aww, the two sided villain-y brother! I actually pitied him a lot during episode with Noonian Soong, as he seemed pretty upset and desperate while he really wanted Soong to "fix" him. I actually think it was pretty selfish of Soong to discard Lore just because he made mistake in his software. No wonder Lore felt lonely, to be only the secoind to "perfect" Data.
I shut up now. I love both of them, but I still pity Lore.