I've been on a real Alistair Reynolds kick lately and just finished House of Suns, which I think is his best. But a good entry point for him is definitely Revelation Space. Good space opera with some gothic elements that I wasn't expecting.

Have you had to do anything to the hardware to get it to keep up? I was using mine as my bedside device up until about a year ago when it got too slow

The games I've spent the most time on (since I got mine before Christmas) are BOTW, TOTK, and funnily enough Factorio. The E-shop does have some decent sales, so just keep an eye out!