Glad to see it’s going well for you. I recently dug out an old laptop and threw Kubuntu onto it. It’s safe to say I’m in love with KDE and wish I had chosen it over Cinnamon, because damn, is it pretty. Nonetheless, I love my desktop setup and KDE runs fine on my old Pentium laptop.
I’ve had some hiccups on my own system, though. Sometimes, the volume control doesn’t work on my G35, other times it won’t recognize my Snowball or have the wrong output setting. There’s also pretty poor dual-monitor support, but that’s just how Linux works. Other than that, I can’t complain. There are some bugs with games like CS:GO where it will randomly crash or bug out when changing resolutions, which can get a little annoying during a comp game.
Most of my problems come from Wine, though. SMITE runs at an abysmal, unsteady framerate, Guild Wars 2 will have sound bugs for a minute at a time, and getting GMT to work was a nightmare, but I did succeed in that! 