I had been alternating between a few different apps, and none of them really felt quite as smooth as Sync did. The fact that it works so well out of the box is awesome!
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.
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!