Update on S10+
I decided to try out One UI, rather than use Nova Launcher Prime, which I've been using on all my Android devices for over four years. Granted, I'm using Gboard,Textra and Aqua Mail Pro, rather than the stock Samsung apps for keyboard, texting and email. However, I wanted to see how I liked One UI, since I despised TouchWiz when I played with Samsung devices in the past.
Surprisingly, I don't have One UI and will probably keep using it. It isn't cluttered and laggy as TouchWiz used to be.
Another thing I did was install PowerAmp Pro, which I purchased when I used my OG Moto X, and it works great on the S10+. The S10+ has Dolby Atmos, so the sound isn't shabby at all. That was one of my concerns about switching from LG, but it's not noticeable to me with the same headphones.
Further updates on the S10+ to follow.