Kde because i want customization and standard is also ok. I tried gnome but did not like that extensions were required for tray icons etc. Gnome is otherwise good.
I3 and hyperland i dont get. Some windows should not be very large no matter how much free screen space you have. Example is calculator or old school chat applications like pidgin. No native standard set of applications. Everything must manually be added and custom, like everything in kde settings(sound output, network settings, screen size etc). Waiting for when applications can recommend its screen size to the window manager.
I love when things are in ram. Can have whole vm disks. I also like creating new VMs in ram disks like /dev/shm it makes less wear on my ssd.