Mountain Laurel Designs - TrailStar

All the various Mids, MLD Trailstar, Yama Swiftline, your Stratospire. Honestly I want my minimal summer shelter be able to deal with rain. Wind is of course a spectrum.

Understand that there is a fundamental tradeoff between wind resistance and snow load resistance. For pure wind resistance in an UL shelter, you can't really beat a Trailstar. It's literally shaped like a wing and slices right through the wind. But those attributes - low and shallow angled - make it not great for snow loading. A traditional mid, with steep sides, will do much better with snow loading while sacrificing some wind resistance (but they still are pretty good in the wind). So it depends on the "4 season conditions" you expect.

If you're open to non - freestanding shelters I'd recommend the MLD Trailstar for that particular trip as it's bomb proof in the wind for such a light shelter. For something a little more well rounded a small mid is great - the MLD Solomid XL or Duomid, the HMG Ultamid 2, or Locus Gear. I've got a Duomid and have used it twice in Alaska - once above the Artic Circle and in all sorts of exposed campsites. Typically I use an X-Mid 1P now, but it wouldn't be my first choice for Patagonia winds, I'd rather use my Duomid in those conditions. If you want something heavier, the Tarptent Scarp is very popular choice in the UK where they get similar type winds.

The Duplex is too heavy? It’s much lighter than any other tent you or anyone else has mentioned in the thread. Anyhow, for your use case, I would recommend a pyramid-style shelter - MLD being the best. Pegging the shelter is essential, free-standing or not. If you learn the big-rock/little rock method you will be able to pitch any shelter anywhere.