Head to head

Luxilon ALU Power Feel 18/1.20 vs Prince Tour XP 15L

They split the measurements 3–3. The widest gap is ball bite, where Tour XP 15L is 27 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Luxilon

ALU Power Feel 18/1.20

Polyester · 18 ga

Prince

Tour XP 15L

Polyester · 15L ga

Stiffness lower = softer, kinder on the arm
18754th pct
18551st pct
Tension loss lower = stays where you strung it
4372nd pct
4474th pct
Energy return higher = livelier, more free power
8737th pct
8739th pct
Spin potential higher = more spin off the string bed
5.467th pct
5.262nd pct
Ball bite higher = grabs the ball harder
0.39621st pct
0.43547th pct
String friction lower = strings slide and snap back
0.07412th pct
0.08331st 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 ALU Power Feel 18/1.20 at 52 lb

String Tour XP 15L at 48.9 lb 22.2 kg

Coming from Tour XP 15L at 52 lb

String ALU Power Feel 18/1.20 at 55.0 lb 24.9 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.

ALU Power Feel 18/1.20 mains / Tour XP 15L crosses

Stiffness53rd pct · 1 measured
Tension loss73rd pct · 1 measured
Energy return39th pct · 1 measured
Spin potential65th pct · 1 measured
Ball bite24th pct · 1 measured
String friction16th pct · 1 measured

Tour XP 15L mains / ALU Power Feel 18/1.20 crosses

Stiffness52nd pct · 1 measured
Tension loss74th pct · 1 measured
Energy return39th pct · 1 measured
Spin potential63rd pct · 1 measured
Ball bite43rd pct · 1 measured
String friction25th 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.

ALU Power Feel 18/1.20

~18 hours of play

Tour XP 15L

~18 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Luxilon ALU Power Feel 18/1.20 Polyester18$21.5018743875.40.3960.074
Prince Tour XP 15L Polyester15Lfind18544875.20.4350.083

Add a third string ALU Power Feel 18/1.20 in full Tour XP 15L in full