Nike Streakfly 2 vs Mizuno Wave Rebellion Flash 2:
Which to Choose

On paper these look like twins — both neutral, both 4/6 cushioning, 5/6 responsiveness, 3/6 stability, both a composite (not carbon) plate — but underfoot they're built on opposite philosophies. The Streakfly 2 is a true stripped-down racing flat: it weighs just 128g (4.5oz) and sits low to the ground on a 27mm heel / 23mm forefoot stack with a 4mm drop, so you get a quick, snappy, close-to-the-road transition from ZoomX foam and a composite shank. The Wave Rebellion Flash 2 is a very different animal — at 239g (8.4oz) it's nearly twice the weight, and it rides on a much taller 35mm heel / 32mm forefoot stack with a near-zero drop (roughly 1mm) and an aggressive cut-away heel that tilts you forward. That geometry, paired with Enerzy Lite foam over a Pebax Wave plate, gives the Mizuno a rockered, propulsive pop and enough underfoot protection to stretch out to the half marathon, where the Nike's minimal platform runs out of cushioning. The trade-off runs the other way at top speed: the Streakfly's featherweight, low-slung build feels more immediate and spike-like when you're flat-out over 5K, while the Mizuno's height and rocker feel slightly more unsettled if you slow down but reward a locked-in midfoot-to-forefoot landing at pace. Both demand a fast runner — neither is a daily trainer or a recovery shoe — but the Nike is the purer short-distance sharpener and the Mizuno is the more versatile, more cushioned fast-racing option.