Head to head

Prince Premier Power 18 vs Tourna Quasi Gut 17

They split the measurements 3–3. The widest gap is ball bite, where Quasi Gut 17 is 41 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Prince

Premier Power 18

Nylon · 18 ga

Tourna

Quasi Gut 17

Nylon · 17 ga

Stiffness lower = softer, kinder on the arm
1436th pct
1294th pct
Tension loss lower = stays where you strung it
2119th pct
2534th pct
Energy return higher = livelier, more free power
9381st pct
9168th pct
Spin potential higher = more spin off the string bed
5.056th pct
5.262nd pct
Ball bite higher = grabs the ball harder
0.43044th pct
0.52485th pct
String friction lower = strings slide and snap back
0.08637th pct
0.10165th pct

Bars are percentile against all 791 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 Premier Power 18 at 52 lb

String Quasi Gut 17 at 57.5 lb 26.1 kg

Coming from Quasi Gut 17 at 52 lb

String Premier Power 18 at 47.0 lb 21.3 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.

Premier Power 18 mains / Quasi Gut 17 crosses

Stiffness5th pct · 1 measured
Tension loss25th pct · 1 measured
Energy return73rd pct · 1 measured
Spin potential58th pct · 1 measured
Ball bite52nd pct · 1 measured
String friction45th pct · 1 measured

Quasi Gut 17 mains / Premier Power 18 crosses

Stiffness4th pct · 1 measured
Tension loss29th pct · 1 measured
Energy return71st pct · 1 measured
Spin potential61st pct · 1 measured
Ball bite81st pct · 1 measured
String friction60th 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.

Premier Power 18

~34 hours of play

Quasi Gut 17

~30 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Prince Premier Power 18 Nylon18find14321935.00.4300.086
Tourna Quasi Gut 17 Nylon17$9.9512925915.20.5240.101

Add a third string Premier Power 18 in full Quasi Gut 17 in full