Niche's flat burr single-dose grinder pairs 83mm burrs with the brand's cult following among espresso nerds, promising the clarity and consistency flat burr devotees chase. The catch is stark: almost no one owns one yet, so you're buying on theory and brand trust, not the field-tested proof that exists for the conical Zero. If you're comfortable being an early adopter and value the Niche workflow enough to take that leap, the fundamentals look sound. If you need to see a grinder survive a few thousand shots in real kitchens first, wait six months and check back.
A mechanical tank with commercial-grade 50mm flat burrs and a track record of owners grinding daily for 15, 20, even 28 years without a hiccup. The stepped adjustment makes dialing in a slow, fussy process, it clumps enough to need a WDT tool, and switching beans or brew methods turns into a cleanup project. If you want one grinder for one setup and prize longevity over convenience, the Rocky earns its reputation. If you rotate beans, chase workflow speed, or need stepless precision, you'll outgrow it fast.