Same for me. This thing is so awesome. I really hope it stays like that for a few years and doesn't slow down with future updates.
The only thing missing for me: Multiple Monitor support.
I at least use a 27" monitor with it fine, so dual-monitor works. But I guess if you need more than that, it might not be a good fit.
To add to this: I run a 32' 4k screen as my sole, external monitor. My M1 air runs it like a champ. I dislike the limit of 1 external monitor, but it does perform well regardless.
Thank you! I'm in the same boat, does your machine work hard and make noise when connected to that 4k monitor?
The MacBook Air makes no noise at all because it has no fan.