Insta360 - Ace Pro 2 vs DJI - Osmo Action 5 Pro

The Ace Pro 2 edges ahead on the Mars Score (85.5 vs 81), but the 4.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Ace Pro 2 if you care most about max video. The biggest gaps in its favor are max video. The single most decisive one: Max video: 8K (vs 4K120).

Pick the Osmo Action 5 Pro if you care most about waterproof depth. Its strongest claims are waterproof depth. The single most decisive one: Waterproof depth — 66.67% more. 20 m vs 12 m.

Both ship with comparable max 4k fps, stabilization, horizon lock, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.