The multitasking is awesome (especially window and monitor management, it's a huge improvement over W10), everything is snappy, the ARM64 battery life (especially in standby) is Macbook-like, I never have issues with USB-C docks and monitors (unlike Fedora where I always have to tinker with the terminal at some point), and the Windows version of Microsoft Excel is still unmatched.

There have also been great updates to PowerToys recently that I wish were easily available on other systems, but that's not a W11 specific thing.

Finally, I really like the UI (but that's obviously subjective! and if you really care about customization, Linux clearly is the best pick for you).