I agree that the Lunar is excellent for size & functionality, as well as durablity. I usually only use the app to check the battery level and I’m still happy with the scale on its own. I have used a few cheaper brands and they tend to break easily if they get liquid on them, or if they’re dropped. The Lunar is water/espresso-proof, very responsive (vital if you don’t have volumetrics, IMO), and can take a bit of a beating.
I’m of the mindset that it’s better to buy one excellent, expensive scale than a bunch of cheap, frustrating, breakable ones, especially given the amount of liquid that ends up around espresso scales.