It's hard to measure objectively but I feel I was dramatically more impressed seeing first Falcon Heavy come down than I was seeing the first successful (non-heavy) landing. I've shown a lot of people (who aren't otherwise into space) the original Falcon Heavy landing video: https://www.youtube.com/watch?v=wbSwFU6tY1c

The most common response, by far, is: "Is that real?"

It really is just that amazing. Even look at the YouTube comments. It's enough to make even the internet become a place of shared awe, wonder, and inspiration. Makes one wonder what the world would be like if we had media that focused more on things like this and less on things that divide and agitate people.

I think two rockets landing at the same time, in unison, more accurately displays the fact both are under computer control.

One landing could just be some person steering it. But two?