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

Diadem

Elite XT 17

Polyester · 17 ga

MSV

Co-Focus 17L (1.18)

Polyester · 17L ga

Stiffness lower = softer, kinder on the arm
18957th pct
18653rd pct
Tension loss lower = stays where you strung it
3251st pct
3149th pct
Energy return higher = livelier, more free power
8957th pct
8952nd pct
Spin potential higher = more spin off the string bed
9.399th pct
7.292nd pct
Ball bite higher = grabs the ball harder
0.695100th pct
0.49375th pct
Snapback lower = strings slide and snap back
0.07513th pct
0.0683rd 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 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

Stiffness55th pct · 1 measured
Tension loss50th pct · 1 measured
Energy return56th pct · 1 measured
Spin potential99th pct · 1 measured
Ball bite99th pct · 1 measured
Snapback10th pct · 1 measured

Co-Focus 17L (1.18) mains / Elite XT 17 crosses

Stiffness55th pct · 1 measured
Tension loss50th pct · 1 measured
Energy return54th pct · 1 measured
Spin potential95th pct · 1 measured
Ball bite85th pct · 1 measured
Snapback4th 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.

Elite XT 17

~25 hours of play

Co-Focus 17L (1.18)

~25 hours of play

Both strings in full

Every published measurement
StringGaugeStiff lb/inLoss %Power %SpinBite COFSnap COF
Diadem Elite XT 17 Polyester1718932899.30.6950.075
MSV Co-Focus 17L (1.18) Polyester17L18631897.20.4930.068

Add a third string Elite XT 17 in full Co-Focus 17L (1.18) in full