If you can wait until the Apple silicon one comes out then wait because it will be significantly more powerful.
The playback preview is still a bit laggy but I think that's to be expected for most laptops. I've been working on some 3D compositions with tons of particles, light effects, and other resource-heavy effects (I'm using plugins from Video Copilot too), and my MacBook behaves as expected.
After Effects version 17.5.1 supports macOS Big Sur on Intel but Apple Silicon is not fully supported at this time. Disable SIP dan Allow Apps from Anywhere. A project-based tutorial designed to help readers master the techniques of Adobe Illustrator CS3 combines practical, self-paced lessons and real-world project files that introduce the applications of such features as LiveTrace, LivePaint. My current laptop is dying on me, so I need a new laptop soon. Also includes better notifications for system compatibility.