We're currently testing a LOT of coffee scales at CoffeeGeek.
As much as I love the Acaia Lunar, I find it nearly impossible to recommend because of the $250 price. Finding suitable and reasonably priced substitutes has been a mission of late.
That said, two of these three scales are NOT Lunar replacements. IMO, the best of the bunch is the DiFluid Microbalance Ti.
Curiosity finds odd rocks with "dragon scales" texture.
"We have seen a lot of layered rocks over the last 12 years on Mars, but these ones really stand out by the dizzying pattern they trace on the rock surfaces."