Miniaturisation + power
This is my first NUC and it's exactly what I was looking for.
Ultra-compact machine with really good firepower. Very easy to add RAM + Nvme SSD.
Ultra quiet in the office. The fan does make itself heard, however, when you're doing more demanding tasks (gaming, for example).
Be careful when installing Windows 11: the Ethernet/Wifi card is not recognised by default (before installing the drivers). So for the initial Windows setup, you need to bypass the installation when it asks you to configure the network (see Microsoft thread "Open cmd with Shift + F10 and type OOBE\BYPASSNRO").