Balkatov That's interesting to read, because I went the opposite direction with one of my machines, which is exactly 10 years old. Since Solus dropped support for nvidia-340 drivers virtually overnight, I went for Ubuntu, then Xubuntu and that machine is so snappy now that I can hardly see a difference between it and my newer, beefier desktop. With the coming extended LTS edition, I can potentially squeeze another decade out of that computer. I dislike the idea of forced obsolescence, so I am pretty happy about that.
That said out-of-the-box GNOME Ubuntu is significantly heavier than GNOME Solus, so the latter immediately offers superior experience if GNOME is your preferred flavor.
