In this post, I want to give an overview over the linux distributions I am using right now and why I use them.
I am since quite a lot of time using Xubuntu on every computer that is a little bit older or has limited resources. Xubuntu is fast, easy to install and uses litle resources, the in my opinion perfect os for old computers. I switched from Lubuntu to Xubuntu, since I actually liked XFCE more and it seemed more smoothly at that time (2014).
On my working machine, which is an desktop from 2012, I am using right now Ubuntu Budgie. This was due some problems I had on installing Manjaro or Fedora. Ubuntu Budgie runs smoothly, I sometimes have small problems with graphics, but this might be also due to my old graphics card. I also like the interface, which is a good mixture between the more mobile-oriented Gnome and a more desktop-oriented approach. I am also using the LTS-version because I do not want to upgrade the complete os very often. On the other side I switched from Ubuntu to Fedora because I wanted to have the latest software. Right now, I did not miss some newer software on my ubuntu machine.
On my notebooks, I am using Manjaro right now. I switched from Fedora, since I first wanted to try out something new and second, I liked the concept of the rolling release and wanted to try out this. From using it one month, I really like it. You get a lot of updates, but they all work smoothly, so there is not a lot to worry about. One particular thing I like about Manjaro is this layout switcher for gnome, that allows your desktop to look like in certain different ways without any configuration or the re-installation of another desktop.
At the end you really need to think about how stable your system should be. If you want a very stable system where you do not have to worry about (and maybe are a beginner with linux as well), use Ubuntu with some of its flavors or maybe Debian, preferably an LTS-version. If you want to try out new software, but maybe also encounter issues, better use Manjaro or Fedora.
On the software side, I get around with all the different distributions. Sure, the way packages are brought to you is different and the philosophy as well. But most of the larger distributions offer a a lot of software, you can do most of the things with all distributions. Using snap makes specialized or even closed-source software really easy, so you do not have to worry all your favorite programs not running anymore when changing the distribution.