Best laptop for 4K video editing?

I'm editing 4K footage from my Sony A7 IV and my current machine struggles. Should I go for the MacBook Pro 16-inch M3 Max or the Dell XPS 15? Budget is flexible.

For sustained 4K timelines the MacBook Pro 16-inch M3 Max with 32GB is hard to beat on battery and thermals. If you prefer Windows, spec the XPS 15 with 32GB and the 1TB drive.

Seconding the MacBook Pro. I switched last month and ProRes scrubbing is instant now.