The Vario is the grinder everyone respects but nobody buys anymore. It'll run for a decade without a hiccup, and the W+ model's grind-by-weight feature actually works, but retention is messy, coarse grinds come out uneven, and newer flat burr grinders at the same price just do more with less fuss. Buy it if you find a refurb under $300 or you prize Baratza's legendary repair support. At full retail, the DF54 and Eureka Mignon have passed it by.
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.