Is the Mizuno ST190 better than the Callaway Quantum?
The two are level on overall Every18 score (97 out of 100), so neither is clearly "better." The Mizuno ST190 suits low spin speed, while the Callaway Quantum suits tri-force face speed.
Mizuno ST190 vs Callaway Quantum
A head-to-head look at two of the top drivers in the Every18 index — scores, fit, estimated used price, and which one to buy.
2026 Drivers
Callaway Quantum
97score / 100
$560est. used
73value index
The verdict
The Mizuno ST190 and the Callaway Quantum are dead even on overall Every18 score (97 each), so the decision comes down to how they differ underneath. The Mizuno ST190 is both the cheaper buy (about $180 used vs $560) and the stronger value pick, which makes it the safer choice if budget matters. The Callaway Quantum is the more forgiving of the two, which is the bigger deal for most mid- and higher-handicap players. Bottom line: choose the Mizuno ST190 if you fit its profile (low spin speed); choose the Callaway Quantum if you lean toward tri-force face speed.
Side-by-side comparison
| Metric | Mizuno ST190 | Callaway Quantum |
|---|---|---|
| Every18 score | 97 | 97 |
| Forgiveness | 80 | 86 ✓ |
| Speed | 89 | 94 ✓ |
| Feel | 78 | 81 ✓ |
| Value rating | 80 ✓ | 73 |
| Est. used price | $180 ✓ | $560 |
| Value index | 226 ✓ | 73 |
| Launch | Low to mid | Mid |
| Spin | Low | Mid |
| Fit profile | Low spin speed | Tri-Force face speed |
Scores, value indexes, and prices are Every18 editorial estimates for comparison. Verify exact specifications, configuration, condition, and market price before purchasing.
Frequently asked questions
Which is better value, the Mizuno ST190 or the Callaway Quantum?
The Mizuno ST190 scores higher on the Every18 value index. Estimated used prices are about $180 for the Mizuno ST190 and $560 for the Callaway Quantum, so the Mizuno ST190 is also the cheaper buy.
Which is more forgiving, the Mizuno ST190 or the Callaway Quantum?
The Callaway Quantum rates higher for forgiveness (86 vs 80), which usually helps mid- and higher-handicap players hold more fairways and greens.
See how these stack up against the rest of the field.
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