What is the difference in user experience between this and Yabai? I don’t think the SIP issues for Yabai is a big one, no one I know who uses Yabai disables SIP, and they seem to enjoy it.
Is the i3 stuff the difference?
Personally I use a utility that allows resizing and moving windows with the mouse from anywhere on the window when holding a modifier combination, like Fluxbox. Not as automatic, but also never flaky - more like making floating much easier with less mouse movement than moving to a totally managed style.
I have used both extensively and I prefer AeroSpace.
Multi monitor support is the killer for me, but there are other small wins.
When you move a workspace in Yabai to a new monitor, it changes it's ID so you can't keep using keyboard shortcuts to access it (alt+2 breaks because it is no longer workspace 2, it becomes 11 or another number). I can move workspaces between monitors easily with alt+m and alt+shift+m.
The other feature is that windows snap instantly without any Mission Control animations. That is a big one that really irks me.
Those are the two features that I need most days and I find Yabai completely unusable because of the lack of workspace support
With Yabai you need to disable SIP if you want to interact with spaces in any way, change the stacking order of windows, and many other things [0]. If you don't use those features, you do you, but for many users those are core features.
Is the i3 stuff the difference?
Personally I use a utility that allows resizing and moving windows with the mouse from anywhere on the window when holding a modifier combination, like Fluxbox. Not as automatic, but also never flaky - more like making floating much easier with less mouse movement than moving to a totally managed style.