The Atom 75 is what happens when a commercial workhorse gets quietly adopted by home espresso obsessives who got tired of waiting. It grinds a 20-gram dose in eight seconds, runs whisper-quiet, and somehow keeps retention to 2.3 grams despite 75mm burrs, a combination that usually requires sacrificing a small appliance to the coffee gods. The height will not fit under every cabinet, and you'll want a dosing ring to catch the occasional escapee grounds, but those are the only real compromises. If you have the counter space and the budget, this is the grinder that makes you forget you ever cared about grinders.
Fellow's $200 all-purpose grinder is a pour-over specialist in espresso clothing. The original clogged relentlessly, coffee caking on chamber walls until owners either deep-cleaned weekly or upgraded within two years. The current Opus 2 solved retention, but espresso remains its weak spot: recommended settings choke most machines, so you grind coarser than the dial suggests and still get less consistency than a DF54 or Eureka Mignon Zero at the same price. Buy it if pour-over is your main game and you want something compact and handsome on the counter. If espresso matters, you'll outgrow it fast.