Main difference: turn (Koi -1 vs Dart 0). The Koi turns over more easily (better for less power or turnover shots); the Dart resists turn and holds a hyzer.
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FAQ
Is the Koi or Dart more overstable?
The Dart is more overstable (stability +0 vs -1). It resists turning and fades harder.
Should a beginner pick the Koi or Dart?
A beginner is better off with the Koi (beginner score 65/100 vs 60/100) - lower speed and more turn make it easier to control.
What is the difference between the Koi and Dart?
Main difference: turn (Koi -1 vs Dart 0). The Koi turns over more easily (better for less power or turnover shots); the Dart resists turn and holds a hyzer.