Nallo 4 GT

Edit: Just read that you're a family of 5. Whoops! sorry. The Hilleberg Nallo 4 GT has been amazing for our family. We've used it all over the US, Alaska and in Northern Europe as a family of 4, and it's basically good as new still. An investment, yes, but if you camp a lot in varying conditions, it's an amazing bit of kit.

Think about the Nallo GT as well, it gives you oodles more space in the porch compared to the Nallo for little weight penalty. I love mine and have used it from windy and rainy Dartmoor to windy and snowy Norway.

~~Winter camping can mean many things. The Nallo isn't a 4 season tent. Specifically, it isn't adapted to snow. Those cat curves on the lower perimeter of the fly are practically impossible to bury and the spindrift will flood the interior. You will regret using the Nallo in full on winter conditions (blown snow).~~ If you have a very limited budget and need one shelter to do it all, your best bet would be a mid with as many sides as you can get/are willing to carry (i.e., a rectangular pyramid -> a hexagonal mid -> an octagonal mid). Edit: My comments about the cat cut on the fly is due to confusion with the Anjan! My apologies for the confusion! FWIW, I've personally used and owned at different points 3 of what are now called the Black Label tents and 6 of the Red Label tents.

What you've described is a Hilleberg. I don't think any other tent beats a Hilleberg in terms of strength to weight. I went with the Nammatj over the Nallo, mainly because I prefer the ventilation on the Nammatj and I prefer the door placement, but it is heavier than the Nallo. You won't be disappointed with the Nallo, or any Hilleberg for that matter, they are awesome.

Pretty much all of the Hilleberg red and black label. Nallo and Soulo are classics. Nallo has more space for its weight and the GT has a wonderful vestibule. Soulo is the strongest 1 person and if you want to go overboard with the strength and camp in 70mph regularly then you can get black label version. Tarra if you want insane strength but will be heavy for one person. Unna is another good one, nice space, not as strong as a Nallo or Soulo but hardly weak, but it does like a vestibule (many unclip one corner). Terra Nova Quasar is another very strong tent, 7 crossing points in its geodesic shape so can cope with snow loading unbelievably well. But it is an inner pitch first which in rain isn't ideal. Slingfin make some good 4 season tents, the crossbow for example, contrary to common belief it isn't necessarily an inner pitch first but it is a bit of a hassle to set up the fly and then put the inner inside. But they use internal guylines as well so are stronger than the shape would suggest resulting in a spacious, relatively low weight tent. I personally have the Nordisk Seiland, more or less a Nallo GT. Slightly bigger and with better ventilation but slightly thinner fly fabric. I've had it in pretty high winds, but have seen a wind tunnel test up to 80mph with single poles. Have also used with friends a couple times and works well, lots of space in the vestibule. Tarptent Scarp is another UK classic, very strong for its weight, sorts out the space issues facing the Hilleberg Akto, just slightly bigger but makes a big difference in long nights, and the crossing poles allow it to cope with high snow loading. Also the Arcdome, very similar to the Unna, but has a vestibule, cheaper as well and comes with a 2p version. We'll see over the coming years, but looking at the design it might actually be slightly stronger than an Unna. Nortent does have strong tents, but they are a bit heavy on the marketing. The Vern is a bit well known for having some strength issues when it first came out, though looking at the Varde I can't see those in the same way (but the double door does mean that regardless of which way the wind is blowing one of the storm flaps will be in the wrong orientation). Almost anything by Samaya, but they make Hilleberg look cheap so there is that. They specialise in breathable single wall tents, and are the only manufacturer that is generally agreed to have manufacturing quality above Hilleberg. And lastly, possibly good fit, possibly not, the MLD Trailstar. When lots of people say four season here they just mean they want it strong for wind, in which case this is a large, very lightweight tent capable of performing in over 60mph. But it's design doesn't lend well to snow loading so if you will be doing lots of winter camps where it may snow heavily overnight it won't be a good option. But if all you care about is wind performance then you won't find anything as good for nearly the same weight. Tom Heaney on YouTube has some fantastic reviews of tents, buys all his tents or borrows from friends, no sponsorships. He's also the only YouTuber I have seen that holds the wind speed measure in the right place instead of walking off a few paces towards the ridge which results in higher wind speeds than what the tent faces. He has a wonderful video "the best two-person four season tent" comparing the Tarra, Quasar and Staika. And he personally loves Samaya. Really, there's lots of tents so I'd recommend choosing a type of tent, tunnel, geodesic, dome based on what you most value, be it strength, space, strength per weight. Then after choosing what type, choose the exact tent.

The Nallo red label is absolutely considered a 4 season tent and I would not hesitate to use it in the winter under most conditions. Only the black label version would be better for extreme arctic conditions.

The trekking pole hilleberg tent suprised me as to how much wind it can take..! but a safer option would be the Nallo series, the worlds best tent hands down