TWSBI Diamond 580 vs Sailor Pro Gear Slim

  • Great for writing and drawing
  • Lightweight and easy to use
  • Holds a lot of ink
  • Comes with a pen case
  • Some people find the extra fine nib too thick
  • Great for a starter pen
  • Not smooth and poor ink flow
  • Missing converter

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Our analysis shows how reviewers feel about different topics. Please note these are not full reviews.

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