This all-metal workhorse grinds espresso beautifully and runs quieter than most competitors, but the stock adjustment dial is the size of a shirt button and makes fine-tuning feel like defusing a bomb in the dark. The 55mm burrs are excellent, the build is tank-like, and the compact footprint fits under cabinets, but displays fail after six months for enough users to matter, and true single-dosing requires an aftermarket hopper and bellows the factory should have included. Buy it if you enjoy tinkering with a strong modding community behind you, or if you'll use the hopper as designed and can live with 2g retention. Skip it if you want plug-and-play reliability or resent paying $400 for a grinder that needs fixes out of the box.
The Niche Zero is the single-dose grinder for people who know they love traditional espresso: medium-dark roasts, chocolatey shots, milk drinks that taste like dessert. It delivers near-zero retention, whisper-quiet operation, and years of reliable service, but the conical burrs that make darker beans sing will flatten fruity Ethiopians into something polite and forgettable. Enough owners have bought a second grinder specifically for light roasts that the pattern is clear. If you're committed to classic espresso profiles and want a grinder that just works, this is still a smart buy; if you're still exploring what you like or already deep into the light roast game, the burr geometry will fight you.