Nox At10 Genius 12K Alum Xtrem By Agustin Tapia vs Siux Electra ST5 Pro Shadow Red 2026 Franco Stupaczuk
Head-to-head on PRR scores, specs, and live prices — independently tested with the same methodology. Updated daily.
Too close to call on score alone
Both rackets score 91/100 in PRR testing, so the right pick comes down to feel and spec. Its biggest edge is control (+2). The Siux Electra ST5 Pro Shadow Red 2026 Franco Stupaczuk answers back on power (+2). On price, the Siux Electra ST5 Pro Shadow Red 2026 Franco Stupaczuk is currently €37 cheaper.
“The 12K Alum Xtrem is the AT10 for players who want Tapia's attacking DNA with a slightly softer entry point. The 12K carbon face reads a touch more forgiving than the 18K on off-pace contact, while the teardrop shape and even balance keep the frame honest through bandejas and transitions. Power 88 finishes points; control 80 keeps the rest of your game intact. Comfort 68 and tolerance 67 are the familiar tax on a frame this capable. At value 78 it undercuts the flagship while giving away very little, which makes it the sensible pick in the range.”
“Franco Stupaczuk's Shadow Red ST5 is built to attack: power 90 with control 78 is a proper first-strike profile, and the confirmed even balance at 365 g explains why it feels quicker between shots than its hitting power implies. Blocks and counters stay manageable, then the same frame turns a short lob into a finished point. The firm side is unavoidable: comfort 67 and tolerance 66 mean mishits are felt and punished. Beyond balance and weight, full spec for this colourway is unconfirmed, so try before you buy. For aggressive all-court players it is a convincing signature frame.”
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