
The North Face
Wawona 6
Spacious vestibule, strong in storms, but rainfly tricky solo.
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Backpacking AND mountaineering? Mountaineering tents are built to be erected above treeline or on snowfields or glaciers, and designed to withstand high winds and potentially heavy snow loads. They usually have solid inners and more robust fabric and/or pole systems. A light mountaineering tent will be heavy for a backpacking tent. You can look at tents that straddle the two categories like the Nemo Kunai 2P, TarpTent ArcDome Ultra 2, Samaya Alpinist 2 Ultra. I wouldn't consider the Nemo Dagger a mountaineering tent. It's a 3 season backpacking tent.
Nemo Kunai 2p / 3p I've used it for about 60 days over the past 12 months, up to about 5100m. It's held up great in storms, and weighs about what you're looking for. Great in winter and summer, low lands and high peaks. You could also consider Hilleberg tents for high durability and quality, though at a very high price point. Samaya I would only buy if I was doing a cutting edge expedition, with the knowledge that you might only get a few trips out of it, but oh boy is it a lightweight tent
I got a deal on a Nemo Kunai and have been happy with it. Ive used it extensively in the Adirondacks & Whites in the winter, and some mountaineering trips out west. Just under 4lbs
I am using multiple naturehike tents and putting them through hell without a single issue to see if they will hold up to my multi week expeditions. Have a nemo kunai, which is good but no better than my naturehike tents. EXCEPT the naturehike are $160 cad. Highly recommend checking them out and see if one model fits the bill and ignore these people recommending $1200+ tents that will do the exact same thing but less waterproof and most likely sag when wet... have a few reviews if interested, but everyone looks for something different in a tent. Tents are not buy once cry once. You are paying for a name after a certain point unless you're summiting mountains with specific expedition gear or something similar.
We have 4, was 5 but I turned one in to a gear reseller and got $40. It was a 30 year old 2p thru-hiker mountain hardware that would not die. We also had a North Face 3p that was awesome, it was barely holding together with patches and 10 layers of seam seal, finally destroyed in a hailstorm in Golden Gate state park. Oldest to newest: 1. huge Coleman for car camping. 2. 3p mountain hardware 3. 2p (roomy) Nemo 4. 2p Sea2Summit (small) ultralight. Depends on what we are doing, we have everything for 3-1/2 seasons.
Nemo tents pack pretty small and are light. The new dragonfly seems like a good option. If it’s just you and another person a 2 person might be more than enough space.

The North Face
Wawona 6
Spacious vestibule, strong in storms, but rainfly tricky solo.

Gazelle Tents
T4 Hub Tent Series
Fastest setup, durable, but bulky and awkward door.

Durston
X-Mid 2
Ultralight, spacious 2P, but not for very strong winds.

Durston
X-Mid 1
Budget ultralight 1P, spacious, but large footprint.

Naturehike
Mongar 2 Backpack Tent (Nylon)
Budget 2P, spacious for price, but not for 4 seasons.

Ranked #1
Durston - X-Mid 2

Ranked #1
Gazelle Tents - T4 Hub Tent Series

Ranked #1
Gazelle Tents - T4 Hub Tent Series

Ranked #1
Durston - X-Mid 2

Ranked #1
Durston - X-Mid 2

Ranked #1
SlingFin - Portal 2