As stated, this is a solid shoe in terms of performance, however I find they seriously lack stability, durability, and versatility.
Going around turns in the 800m they almost felt as though my foot was sliding out. The upper is almost like fishing net (google close up) and is so thin it lacks the security and lockdown to hold my foot steady to the spike around any curvature at high speeds. This is extremely problematic given that they are marketed as a 800-1500m spike, meaning they should have nearly unparalleled lockdown for such high speed races.
They are a solid spike if you forefoot strike, but if you heel or even mid-foot strike I highly discourage these spikes as the energy return (due to the plate only being half-length and in the front) simply lacks compared to a spike like the dragonfly. The lack of cushioning is also a higher injury risk, this spike really should not be used for over 1 mile of racing as it begins to pound on your feet and lower legs.
Finally, the lack of versatility when compared to the Dragonfly simply cannot be overlooked when both products exist. Overall, I still really do enjoy racing in these spikes, they are extremely fun and bouncy, however, I simply cannot get past the price tag when the performance of the shoe is as peppered with shortcomings as glaring as in the Nike Air-Zoom Victory.