Amazfit - Helio Ring vs Garmin - Lily 2

These two are evenly matched on the broad strokes, with the decision sitting on which individual spec advantages weigh more for your use.

Pick the Helio Ring if you care most about water resistance. The biggest gaps in its favor are water resistance.

Pick the Lily 2 if you care most about sport modes. Its strongest claims are sport modes.

Both ship with comparable battery life, gps, spo2, 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.