I just went to both one recent morning. The A1 was as crowded as ever, the A11 one had less people but felt more cramped due to it being a much smaller space. The food offerings are the same between the two lounges, which gives the A11 club an edge since it’s the same single buffet for fewer people. Unless I’m remembering wrong, only one espresso machine at A11.

All things considered, I will stick to the A1 lounge even if flying out of high-number A gate, due to the spaciousness.