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Head to head

Gosen Polylon Comfort 16 vs MSV Hepta-Twist 17

Hepta-Twist 17 leads on 5 of 6 measurements. The widest gap is ball bite, where Hepta-Twist 17 is 46 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Gosen

Polylon Comfort 16

Polyester · 16 ga

MSV

Hepta-Twist 17

Polyester · 17 ga

Stiffness lower = softer, kinder on the arm
18957th pct
18148th pct
Tension loss lower = stays where you strung it
5494th pct
5088th pct
Energy return higher = livelier, more free power
8310th pct
8414th pct
Spin potential higher = more spin off the string bed
5.569th pct
5.774th pct
Ball bite higher = grabs the ball harder
0.40225th pct
0.48271st pct
String friction lower = strings slide and snap back
0.0739th pct
0.08534th 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 Polylon Comfort 16 at 52 lb

String Hepta-Twist 17 at 54.3 lb 24.6 kg

Coming from Hepta-Twist 17 at 52 lb

String Polylon Comfort 16 at 50.3 lb 22.8 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.

Polylon Comfort 16 mains / Hepta-Twist 17 crosses

Stiffness53rd pct · 1 measured
Tension loss93rd pct · 1 measured
Energy return11th pct · 1 measured
Spin potential70th pct · 1 measured
Ball bite33rd pct · 1 measured
String friction15th pct · 1 measured

Hepta-Twist 17 mains / Polylon Comfort 16 crosses

Stiffness51st pct · 1 measured
Tension loss91st pct · 1 measured
Energy return13th pct · 1 measured
Spin potential73rd pct · 1 measured
Ball bite66th pct · 1 measured
String friction28th 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.

Polylon Comfort 16

~12 hours of play

Hepta-Twist 17

~14 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Gosen Polylon Comfort 16 Polyester16find18954835.50.4020.073
MSV Hepta-Twist 17 Polyester17find18150845.70.4820.085

Add a third string Polylon Comfort 16 in full Hepta-Twist 17 in full