True all day battery life while holding it's own against Intel desktop-class perf is super exciting. (I'm aware that some Intel chips go faster, but see eg [1] -- not near the price point.)

You could get that battery life before, but not without tradeoffs you really felt.

I can barely feel the perf difference between my 2015 mbp and my 2019; I'm dorkily excited to get a new laptop and actually feel a perf bump. It kind of feels like the 90s again.

And separately excited for what happens when Apple makes an m2 or whatever with more thermal budget to compete in the desktop space.

[1] https://techjourneyman.com/blog/apple-m1-vs-intel-core-i9/