Here is how these two headlamps compare on the numbers. The Actik Core takes a modest overall edge, led by brightness, but the Storm 500-R has its own case.
| Petzl Actik Core | Black Diamond Storm 500-R | |
|---|---|---|
| GearScore | 73✓ | 67 |
| Max lumens | 600 lm✓ | 500 lm |
| Weight | 3.1 oz✓ | 4.2 oz |
| Beam distance | 115 m | 120 m✓ |
| Max runtime | 130 h | 350 h |
| Price | $85 | $75✓ |
| Battery | Hybrid | Rechargeable |
| Water rating | IPX4 | IPX7 |
Highlighted cells mark the better spec: Actik Core in blue, Storm 500-R in amber. A blank spec is never counted as a win. Runtime is shown for context and is not scored, since makers publish it at different brightness levels. GearScore is the overall rating (0 to 100); re-weight it on the full headlamp comparison. Prices are current MSRP.
The Petzl Actik Core against the Black Diamond Storm 500-R is a study in priorities. The Actik Core wins on brightness and low weight, and the Storm 500-R pushes back on longer throw and price.
The Actik Core is brighter (600 vs 500 lm) and 31 g lighter. The Storm 500-R is a longer beam (120 vs 115 m) and $10 cheaper. On the default GearScore the Actik Core leads 73 to 67.
Pick the Actik Core if you care most about brightness and low weight, which makes it the better call for your priorities. Pick the Storm 500-R if longer throw and price matter more to you, or you are focused on your priorities.
The Petzl Actik Core. It is brighter (600 vs 500 lm) than the Storm 500-R.
The Petzl Actik Core. It is 31 g lighter than the Storm 500-R.
The Petzl Actik Core, 73 to 67 on the default algorithm. You can re-weight the factors to match your trip.
It depends on your priorities. Go with the Actik Core for brightness, or the Storm 500-R for longer throw. The spec table above shows exactly where each wins.