A close look at two tents buyers cross-shop. They score within a hair of each other, so it comes down to the details below.
| NEMO Dagger OSMO 3P | SlingFin Portal 3 | |
|---|---|---|
| GearScore | 76✓ | 76 |
| Capacity | 3 | 3 |
| Packed weight | 61.0 oz | 60.0 oz✓ |
| Floor area | 42.8 sq ft✓ | 41.5 sq ft |
| Space-to-weight | 11.2 /lb✓ | 11.1 /lb |
| Peak height | 44 in | 44 in |
| Doors | 2 | 2 |
| Vestibules | 2 | 2 |
| Price | $650✓ | $690 |
| Type | Backpacking | Ultralight |
Highlighted cells mark the better spec: Dagger OSMO 3P in blue, Portal 3 in amber. A blank spec is never counted as a win. GearScore is the overall rating (0 to 100); re-weight it on the full tent comparison. Prices are current MSRP.
Put the NEMO Dagger OSMO 3P next to the SlingFin Portal 3 and the trade-offs are clear. They are close enough that this really is about which handful of specs you weight most.
The Dagger OSMO 3P is more floor area (42.8 vs 41.5 sq ft), better space-to-weight, and $40 cheaper. The Portal 3 is 1 oz lighter. Their GearScores land within a couple of points (76 vs 76), so neither runs away with it.
Pick the Dagger OSMO 3P if you care most about floor space and space-to-weight, which makes it the better call for comfort and room to move. Pick the Portal 3 if low weight matter more to you, or you are focused on counting grams on long miles.
The NEMO Dagger OSMO 3P. It is more floor area (42.8 vs 41.5 sq ft) than the Portal 3.
The SlingFin Portal 3. It is 1 oz lighter than the Dagger OSMO 3P.
They are nearly tied at 76 and 76 on the default algorithm, so re-weight the score to your own priorities to break the tie.
It depends on your priorities. Go with the Dagger OSMO 3P for floor space, or the Portal 3 for low weight. The spec table above shows exactly where each wins.