I have a 16" 2021 Macbook Pro M1.

1. It's great. I'm not sure I've ever heard the fans spin up. I've had very occasional glitches with sound when switching workspaces.

2. The only thing that's been a blocker for me is trying to run an old Terraform release and the lack of some arm64 docker images (in which case I have to target amd64).

3. See #2. In addition, I did experience some poor performance when mounting volumes from my local filesystem, but that has been _vastly_ improved since they added "VirtioFS accelerated directory sharing". Now it's great.

4. I only have 16GB of RAM. My workloads are typically not that heavy, but I have edited a couple of videos in DaVinci Resolve and didn't have any issues. Sounds like it would make sense for you to go for 32GB though.