Coffee Grinders · owner-verdict comparison

1Zpresso J-Ultra vs Fellow Opus: what real owners say

Real owners lean toward the 1Zpresso J-Ultra: 56% of 52 owners recommend it, vs 32% of 138 for the Fellow Opus.

Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score

1Zpresso J-Ultra

56%of 52 owners recommend
56% recommend · 32% neutral · 12% don't
Full owner report →

Fellow Opus

32%of 138 owners recommend
32% recommend · 17% neutral · 51% don't
Owners praise
  • Excellent grind quality for the price
  • Strong value as an entry-level grinder
  • Handles espresso, pour over and filter well
Owners complain about
  • Heavy grounds retention requires banging the grinder
  • Static and mess scatters grounds everywhere
  • Inconsistent and drifting grind from one use to the next
Full owner report →

What 1Zpresso J-Ultra owners say

“shots grinded by K-Ultra are generally having more vibrant taste notes and more stable”
— @BkunS on YouTube
“I have the J-Max and I couldn't be happier”
— @cantrellisgod on YouTube
“it is far from good when it comes to light roasts beans (LR)”
— @juanillo52 on YouTube

What Fellow Opus owners say

“I absolutely love my Opus and would happily buy more of their stuff”
— StoneTown on Reddit
“I have an Opus, and don’t get me wrong, I love it”
— @SorooshSaghebi on YouTube
“after just a week I was fed up with the Opus (1 minute grind time for 18g, inconsistent retention requiring beatings, drifting grind setting, messy etc.)”
— chronic_ass_crust on Reddit