Is the OnePlus Buds Z worth the upgrade from the Nothing CMF Buds 2?
Verdict
Downgrade
The OnePlus Buds Z actually scores 18.5 points below the Nothing CMF Buds 2, so on aggregate review consensus this is a step backwards. It loses ground on battery (8.8 to 6.5) and value (9.4 to 7.5). Worth checking: battery life goes 13.5 h to 5 h and active noise cancelling goes Yes to No. And it costs $13 more for a lower score, which is hard to justify on the data alone. Only worth it if a specific feature above matters more to you than overall quality does.
What actually changes
Sub-scores both products have, on the same 0-10 scale. Bars extend right for a gain, left for a loss.
- Sound7.76.0
- Battery8.86.5
- Calls6.56.0
- Value9.47.5
Spec differences
Only where the two genuinely differ - everything they share is omitted.
| Spec | CMF Buds 2 | Buds Z | Direction |
|---|---|---|---|
| Battery life | 13.5 h | 5 h | |
| Active noise cancelling | Yes | No | |
| Bluetooth | 5.4 | 5.0 | |
| Multipoint pairing | Yes | No | |
| Battery incl. case | 55 h | 20 h | |
| Driver size | 11 mm | 10 mm | |
| Microphones | 6 | 2 | |
| Transparency mode | Yes | No | |
| Companion app | Yes | No | |
| Custom EQ | Yes | No | |
| Wear detection | Yes | No | |
| ANC type | hybrid | none | |
| Quick charge | 10 min → 4 h | 10 min → 3 h | |
| Driver | 11 mm driver | 10 mm dynamic |
About this verdict
Direction matters here: this page answers "CMF Buds 2 to Buds Z". The other direction is a separate question with a different answer. Scores blend published review verdicts across true wireless and shift as new reviews land, so a marginal call today may not be one next quarter.