Main difference: turn (Zone OS 1 vs Screech 0). The Screech turns over more easily (better for less power or turnover shots); the Zone OS resists turn and holds a hyzer.
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FAQ
Is the Zone OS or Screech more overstable?
The Zone OS is more overstable (stability +6 vs +4). It resists turning and fades harder.
Should a beginner pick the Zone OS or Screech?
A beginner is better off with the Screech (beginner score 37/100 vs 33/100) - lower speed and more turn make it easier to control.
What is the difference between the Zone OS and Screech?
Main difference: turn (Zone OS 1 vs Screech 0). The Screech turns over more easily (better for less power or turnover shots); the Zone OS resists turn and holds a hyzer.