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.
This $4,000-$6,300 grinder with 80mm flat burrs delivers genuinely exceptional filter coffee; owners who've compared it side-by-side with their $200 grinders consistently taste flavors they'd never found before. The tension is real, though: multiple users admit their budget grinders get them 90% of the way there with far less fuss, and the Core burrs don't always justify the 20x price gap. It's beautifully engineered, user-serviceable, and undeniably capable, with one occasional fuse-blowing quirk when buttons are pressed wrong. Unless you're chasing that last 10% of clarity in a $30 bag of beans and have exhausted every other upgrade, this is a very expensive way to feel slightly better about your morning ritual.