Have they improved the keycaps on the K3 since launch? I had one at launch and ended up returning it because the keycaps were so poor. Very rough with lots of imperfections.
I've found it worth buying a set of keycaps that I know I like. Even amongst keycaps made of the same plastic (PBT), they don't always feel the same. And in my experience, the keycaps make as much or more of a difference in feeling as the switches themselves.
Specifically, I bought a set of the Granite DSA keycaps several years ago and always use them on my primary keyboard.
The problem with the linked keyboard, the K3, is it's ultra low profile. At least at launch, there were no alternatives on the market except the ones that it came with. The keycaps are thinner than my phone and I remember trying different keycaps and I think they worked (maybe upside down?), but not well.
Thanks! I actually did like the keyboard, but the keycaps were unbearable bad and I went back to my Magic Keyboard (which I don't mind at all, really; I just know I can do better and would like to explore a bit)