Until a couple of weeks ago I used Fedora Silverblue.
Then, after mostly using GNOME Shell for about a decade, I (reluctantly) tried KDE Plasma 5.27 on my desktop due to its support for variable refresh rate and since then I have fallen in love with KDE Plasma for the first time (retrospectively I couldn’t stand it from version 4 until around 5.20).
Now I am using Fedora 39 Kinoite on two of my three devices and Fedora 39 KDE on a 2-in-1 laptop that requires custom DKMS modules (not possible on atomic Fedora spins) for the speakers.
Personally I try to use containers (Flatpaks on the desktop and OCI images on my homeserver) whenever possible. I love that I can easily restrict or expand permissions (e. g. I have a global nosocket=x11 override) and that my documentation is valid with most distributions, since Flatpak always behaves the same.
I like using Fedora, since it isn’t a rolling release, but its software is still up-to-date and it has always (first version I used is Fedora 15) given me a clean, stable and relatively bug-free experience.
In my opinion Ubuntu actually has the perfect release cycle, but Canonical lost me with their flawed-by-design snap packages and their new installers with incredibly limited manual partitioning options (encryption without LVM, etc.).