From my experience, KDE Plasma can be the prettiest and "coolest," but I tend to run into complications with it. Weird bugs I don't understand and can't fix. My main computer works pretty well with Gnome (Debian), but I also have a couple older computers that need to run XFCE on MX Linux (which seems to do the job, but without as much polish). I'm glad we have choices to use what suits us best. I do tend to like exploring my options.

i've experienced a number of bugs, but it's fast (rust after all) unfortunately i find myself sometimes switching back to KDE to get my drawing screen to work

oh, i used the cosmic desktop, but not popos i installed it on artix linux, but i've never actually tried PopOS