Pro, Tour, Game, Play: which to choose
Many Yonex rackets come in several versions of one model — for example Astrox 77 Pro, Tour and Play. The name and the design look alike; the materials and the stiffness inside differ.
Pro (and the ZZ, Z flagships)
The stiffest version of the model with the best materials. The Pro of many models is made in Japan. It forgives fewer mistakes — for strong players with stable technique who train 3–4 times a week.
Tour
Stiffer and more precise than Game, but softer and more forgiving than Pro. Usually made in Taiwan. For advanced players and competition, often the step before Pro.
Game
Flexible to medium stiffness, better graphite than Play and a more stable frame. Usually made in Taiwan. For club players who play 2–3 times a week.
Play
The most flexible version with a large sweet spot and simpler graphite. Usually made in China. For players who have just started or play once a week.
A given model can differ: Astrox 77 Pro and Tour, for example, have the same medium stiffness. The exact facts of each version — country, stiffness, level, frame — are in the versions row on the racket's page.
More expensive does not mean better: choose the version for your level and how often you play.