For me it was the Lightning, I’ve seen harriers in the past but my son was amazed to see a jet hovering describing it as “space aged” and of course the South Koreans
Swiss Hornet and Black Eagles for me. No point in comparing any of the helicopters really as none are a patch on the Chinook, and none can match the Apache role demo. But just seeing the Hinds in the air again was enough for me.
Can't comment on the Austrians as a 'tech issue' curtailed the second half of that.