Here is how these two tents compare on the numbers. They score within a hair of each other, so it comes down to the details below.
| Mountain Hardwear Nimbus UL 2 | NEMO Hornet OSMO 2P | |
|---|---|---|
| GearScore | 79✓ | 77 |
| Capacity | 2 | 2 |
| Packed weight | 32.0 oz✓ | 33.0 oz |
| Floor area | 28.1 sq ft✓ | 27.5 sq ft |
| Space-to-weight | 14.1 /lb✓ | 13.3 /lb |
| Peak height | 41 in✓ | 39 in |
| Doors | 1 | 2✓ |
| Vestibules | 1 | 2✓ |
| Price | $460✓ | $480 |
| Type | Ultralight | Ultralight |
Highlighted cells mark the better spec: Nimbus UL 2 in blue, Hornet OSMO 2P 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.
The Mountain Hardwear Nimbus UL 2 against the NEMO Hornet OSMO 2P is a study in priorities. They are close enough that this really is about which handful of specs you weight most.
The Nimbus UL 2 is 1 oz lighter, more floor area (28.1 vs 27.5 sq ft), and better space-to-weight. The Hornet OSMO 2P is more doors (2 vs 1) and more vestibules (2 vs 1). Their GearScores land within a couple of points (79 vs 77), so neither runs away with it.
Pick the Nimbus UL 2 if you care most about low weight and floor space, which makes it the better call for counting grams on long miles. Pick the Hornet OSMO 2P if doors and vestibule storage matter more to you, or you are focused on comfort and room to move.
The Mountain Hardwear Nimbus UL 2. It is 1 oz lighter than the Hornet OSMO 2P.
The Mountain Hardwear Nimbus UL 2. It is more floor area (28.1 vs 27.5 sq ft) than the Hornet OSMO 2P.
They are nearly tied at 79 and 77 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 Nimbus UL 2 for low weight, or the Hornet OSMO 2P for doors. The spec table above shows exactly where each wins.