String comparison
Pro Line II vs Tour XP
Kirschbaum Pro Line II against Prince Tour XP: ratings, specs and which one fits your junior.
The short answer
Both are polyester strings. Tour XP leads on spin and tension hold. They score the same for arm friendliness (3/5). Tour XP costs less per set.
Ratings
Power
Spin
Control
Comfort
Durability
Tension hold
Ratings are on a 1–10 scale. The higher score is in bold when they differ.
Pick Pro Line II if…
- Best for: players wanting soft, responsive poly
- Best for: all-court players seeking versatility
- Best for: those who want poly control with better feel
Pick Tour XP if…
- You want more spin (8 vs 7 out of 10)
- You want more tension hold (9 vs 8 out of 10)
- You want to spend less (from $8 vs $10 a set)
- Best for: players frustrated by tension loss
- Best for: spin players seeking consistent response
- Best for: budget-conscious competitive players
Specs side by side
| Spec | Pro Line II | Tour XP |
|---|---|---|
| Type | Polyester | Polyester |
| Construction | Round co-polyester monofilament with pre-stretch treatment | Thermopoly co-polyester monofilament |
| Gauges | 16, 17, 18 | 16, 17 |
| Stiffness | Medium | Medium |
| Set price | $10–13 | $8–10 |
| Reel price | $90–110 | $90–110 |
| Arm friendliness | 3/5 · Moderate | 3/5 · Moderate |
| Cost to maintain | 5/5 | 5/5 |
| Recommended from | Age 12 | Age 12 |
| Levels | Intermediate, Advanced, Elite | Intermediate, Advanced, Elite |
| Play styles | Baseliner, All court, Big hitter | Baseliner, All court, Big hitter |
| Junior tension | 50-54 lbs for juniors. Pre-stretched for better tension maintenance. | 50-54 lbs for juniors. Exceptional tension maintenance means less drop-off. |
Pro Line II in short
Kirschbaum Pro Line II is one of the softest and most responsive co-polyester strings available. Built on 20+ years of German polyester expertise from the company that pioneered polyester tennis strings, Pro Line II offers better pocketing and a more forgiving feel on off-center impacts compared to traditional polyesters. The pre-stretch treatment ensures consistent playability with precise and predictable response, enabling players to swing bigger when going for pace and spin.
Tour XP in short
Prince Tour XP (originally released as Beast XP) is a new-age thermopoly designed to sidestep the terrible feel and abysmal tension maintenance that plagued polyester strings. Two years in development with extensive elite player feedback, Tour XP delivers spin-friendly performance with impressive accuracy on full swings. The "thermo construction" technology creates excellent ball pocketing - the ball feels like it gets a "hug" from the stringbed. Tension loss is minimal - typically 1 pound vs 4-6 pounds for standard polys.
Pro Line II vs Tour XP: quick answers
Which has more spin, Pro Line II or Tour XP?
Prince Tour XP, with a spin rating of 8/10 against 7/10.
Which is more arm-friendly for a junior?
They score the same, 3/5. Pro Line II is recommended from age 12 and Tour XP from age 12.
Which lasts longer?
They tie on durability (8/10). Tension maintenance: Pro Line II 8/10, Tour XP 9/10.
Which is cheaper?
Pro Line II costs about $10–13 a set and Tour XP about $8–10, at typical retail.
The short answer and the "pick if" lists are generated from our ratings and junior data only. Data verified 2025-01 (Pro Line II) and 2025-01 (Tour XP).