Insta360 - ONE RS (Twin Edition) vs DJI - Osmo Action 4

The Osmo Action 4 is the clear pick on raw spec strength, leading by 36.4 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the ONE RS (Twin Edition) if you care most about max video. The biggest gaps in its favor are max video.

Pick the Osmo Action 4 if you care most about waterproof depth and max 4k fps. Its strongest claims are waterproof depth, max 4k fps.

Both ship with comparable stabilization, horizon lock, so those specs don't separate the two — focus on the differences below.

Bottom line: the Osmo Action 4 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.