Head to head
Diadem Elite XT 17 vs MSV Co-Focus 17L (1.18)
They split the measurements 3–3. The widest gap is ball bite, where Elite XT 17 is 25 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.
Measured, side by side
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.
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Elite XT 1713th
Co-Focus 17L (1.18)60th
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Elite XT 17346th
Co-Focus 17L (1.18)337th
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Elite XT 17406th
Co-Focus 17L (1.18)415th
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Elite XT 17314th
Co-Focus 17L (1.18)323rd
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Elite XT 17393rd
Co-Focus 17L (1.18)390th
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Elite XT 17113th
Co-Focus 17L (1.18)1st
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Elite XT 17318th
Co-Focus 17L (1.18)321st
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 Elite XT 17 at 52 lb
String Co-Focus 17L (1.18) at 53.0 lb 24.0 kg
Coming from Co-Focus 17L (1.18) at 52 lb
String Elite XT 17 at 51.0 lb 23.1 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.
Elite XT 17 mains / Co-Focus 17L (1.18) crosses
Co-Focus 17L (1.18) mains / Elite XT 17 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.
Elite XT 17
~25 hours of play
Co-Focus 17L (1.18)
~25 hours of play
Both strings in full
| String | Gauge | Stiff lb/in | Loss % | Power % | Spin | Bite COF | Snap COF |
|---|---|---|---|---|---|---|---|
| Diadem Elite XT 17 Polyester | 17 | 189 | 32 | 89 | 9.3 | 0.695 | 0.075 |
| MSV Co-Focus 17L (1.18) Polyester | 17L | 186 | 31 | 89 | 7.2 | 0.493 | 0.068 |
Add a third string Elite XT 17 in full Co-Focus 17L (1.18) in full