Canon 7 is quite large, especially if you add a lens that isn't a collapsible/slow 50mm. Even the small/light late black rigid Canon 50/1.8 makes it quite a bit heavier than any of the rest. Most would not consider the 7's meter to be accurate, and my sample's meter is DOA. For quick shots, I'd much prefer a QL17 over the 7, unless it was in very low light or you absolutely needed wider/longer lenses.