Hario's ceramic-burr hand grinder gets you off the blade-grinder carousel, but the grind quality trails what competitors deliver at nearly the same price. The adjustment mechanism lacks the precision of stepped grinders, and coarser settings throw more fines than a 1Zpresso or Timemore, which matters if you're serious enough about coffee to crank beans by hand in the first place. Buy it only if you're testing whether manual grinding fits your routine and truly cannot add another thirty dollars; otherwise, start with a JX-Pro or C2 and skip the upgrade cycle most Skerton owners face within a year.
The C3 is a handsome, well-built hand grinder that makes good pour over coffee but has been quietly retired by the market. The grind dial can slip or free-spin at certain click positions, forcing you to recount from zero mid-session, and espresso grinding demands a full minute of hard cranking for a single shot. If you already own one and brew pour over, it'll keep working just fine. If you're shopping today, skip straight to Timemore's own S3 or the Kingrinder K6, both faster and more reliable at the same price or less.