Fairway Driver · Understable vs Stable
The Axiom Insanity (9/5/-2/+1.5) and Dynamic Discs Vandal (9/5/-1.5/+2) are both fairway drivers, and they fly very similarly.
Both are speed 9, so neither needs more power than the other to reach its flight. The Vandal is the more overstable of the two (stability +0.5 vs -0.5), so it fights wind and finishes harder to the left, while the Insanity flies straighter or turns more. Both land at a similar estimated maximum distance (about 111 m).
Choose the Vandal when you need to fight wind, throw forehand, or want a dependable finishing hook. Reach for the Insanity when you want a straighter line, an easier turnover, or more help at a lower arm speed.
Both are speed 9, so neither needs more power than the other to reach its flight. The Vandal is the more overstable of the two (stability +0.5 vs -0.5), so it fights wind and finishes harder to the left, while the Insanity flies straighter or turns more.
The Vandal is more overstable and finishes harder to the left; the Insanity flies straighter or turns more easily.