Head to head

Leopard Plus Control 16 vs Signum Pro Poly Speed Spin 1.28

Plus Control 16 leads on 4 of 6 measurements. The widest gap is ball bite, where Poly Speed Spin 1.28 is 58 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Leopard

Plus Control 16

Polyester · 16 ga

Signum Pro

Poly Speed Spin 1.28

Polyester

Stiffness lower = softer, kinder on the arm
22691st pct
24699th pct
Tension loss lower = stays where you strung it
4067th pct
4168th pct
Energy return higher = livelier, more free power
8520th pct
8519th pct
Spin potential higher = more spin off the string bed
3.927th pct
4.337th pct
Ball bite higher = grabs the ball harder
0.37812th pct
0.48070th pct
Snapback lower = strings slide and snap back
0.09759th pct
0.11278th pct

Bars are percentile against all 788 strings, and the marked side is the one that measures better — which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions — the calculator takes your own tension.

Coming from Plus Control 16 at 52 lb

String Poly Speed Spin 1.28 at 45.6 lb 20.7 kg

Coming from Poly Speed Spin 1.28 at 52 lb

String Plus Control 16 at 62.8 lb 28.5 kg

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed — these figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

Plus Control 16 mains / Poly Speed Spin 1.28 crosses

Stiffness96th pct · 1 measured
Tension loss68th pct · 1 measured
Energy return19th pct · 1 measured
Spin potential29th pct · 1 measured
Ball bite20th pct · 1 measured
Snapback64th pct · 1 measured

Poly Speed Spin 1.28 mains / Plus Control 16 crosses

Stiffness97th pct · 1 measured
Tension loss68th pct · 1 measured
Energy return19th pct · 1 measured
Spin potential36th pct · 1 measured
Ball bite63rd pct · 1 measured
Snapback74th pct · 1 measured

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it — not when the string breaks.

Plus Control 16

~20 hours of play

Poly Speed Spin 1.28

~19 hours of play

Both strings in full

Every published measurement
StringGaugeStiff lb/inLoss %Power %SpinBite COFSnap COF
Leopard Plus Control 16 Polyester1622640853.90.3780.097
Signum Pro Poly Speed Spin 1.28 Polyester24641854.30.4800.112

Add a third string Plus Control 16 in full Poly Speed Spin 1.28 in full