Apple - AirPods 4 with ANC vs Bose - QuietComfort Ultra Earbuds 2

These two are nearly even on the Mars Score (58.3 vs 58.4). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.

Pick the AirPods 4 with ANC if you care most about driver size and weight per bud. The biggest gaps in its favor are driver size, weight per bud, water resistance.

Pick the QuietComfort Ultra Earbuds 2 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are battery — buds, battery — with case, multipoint.

Both ship with comparable active noise cancellation, spatial audio, so those specs don't separate the two — focus on the differences below.

Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.