A month ago, I switched from Ubuntu to Pop Os, which wasn't an easy decision.
I've been using Linux as the desktop OS for the last 15 years, ten years of these - with Ubuntu, since 8.06. I always appreciated Ubuntu because it just works, unlike other rivals. It was stable and reliable OS I can rely on. Canonical invested a lot to the UI and UX, namely in Unity, as to me it's a game-changer and productivity booster.
But as Ubuntu developers and maintainers have chosen a different path. Long story short - the system becames very unstable and buggy, with poor user experience, Unity has been deprecated. Snaps are either broken or partially working. That made me look around in search of better desktop Linux, and after considering and trying a few options, I stopped at Pop!_OS.
Essentially PopOS is Ubuntu fork which doesn't have Snap Packages in its core. You can think it's like Ubuntu 19.04 when everything used to work just fine. Instead of snaps, Pop OS has most of the packages available as a classic deb or a flatpack.
Why use Pop OS?
For me, the main reason I prefer Pop OS because it just works, as it was in earlier versions of Ubuntu.
It's open-sourced and maintained by System 76, a company manufacturing high-end laptops for the power users.
Pop!OS is not very far from its parent - it has same Debian-based package system, it's compatible and based on the same apt Ubuntu repositories and follows Ubuntu releases. That all make migration smooth, virtually non-existent. You'll _hardly notice any difference with Ubuntu, especially when compared to the OpenSuse Tumbleweed or Manjaro - the ones I shortlisted.
Pop OS also features Pop!_Shop - a marketplace for the software for both deb and flatpack applications. Unlike new "Ubuntu Software Store"(which is a snap repository browser now) all software I tried from the Pop!_Shop is working.
Issues with Pop OS?
So far, I can't think of something serious. For the apparent reasons, Unity and Compiz-Fusion are not maintained now, so I have to tune GNOME to a decent functional level and gain the maximum productivity out of it. But this has nothing to do with PopOS
The installation didn't go well; Pop OS installer failed to recognize my luks partition, and I had to fix it manually with init 1, like in good old times!
Unfortunatelly I could not make PopOS boot with secure boot with my Lenovo T480s, so I left it disabled
Pop!_OS is a great desktop Linux and it's supperior to Ubuntu in my opinion because it's much stable and doesn't have enourmous issues with software packaged in snaps.
It's great to see that there are more competition for the desktop Linux OS outthere - it's always beneficial for the end user.