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
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.
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ALU Power Feel 18/1.20277th
Tour XP 15L275th
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ALU Power Feel 18/1.20407th
Tour XP 15L384th
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ALU Power Feel 18/1.20390th
Tour XP 15L422nd
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ALU Power Feel 18/1.20403rd
Tour XP 15L374th
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ALU Power Feel 18/1.20555th
Tour XP 15L566th
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ALU Power Feel 18/1.20277th
Tour XP 15L48th
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ALU Power Feel 18/1.20429th
Tour XP 15L406th
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
Tour XP 15L mains / ALU Power Feel 18/1.20 crosses
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
| String | Gauge | Price | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Friction COF |
|---|---|---|---|---|---|---|---|---|
| Luxilon ALU Power Feel 18/1.20 Polyester | 18 | $21.50 | 187 | 43 | 87 | 5.4 | 0.396 | 0.074 |
| Prince Tour XP 15L Polyester | 15L | find | 185 | 44 | 87 | 5.2 | 0.435 | 0.083 |
Add a third string ALU Power Feel 18/1.20 in full Tour XP 15L in full