In reply to sean1:
I doubt it. With other large brand 'Scandi' makers such as Nordisk (for lightweight) and (Helsport) for winter, I don't think the prices Hilleberg set are worth it. I have used a Helsport and think that their tents are very good.
For value: I would probably get an MSR Hubba because they are so popular, they must be good, and the designs seem practical? For winter, I would probably try Crux - good materials, respectable price for a small brand. Exped Orion or Venus also look like great tents, for year round outer-pitch-first. I think all the aforementioned come with taped groundsheets, something that seems to elude Hilleberg to this day.
The poles at 10mm might be 'overkill', as they are only 8-9mm on their other four seasons. The reason I like them is more related to the fact that tunnel tents in a storm can be nerve-wrecking, so to look out and see the poles so stable can be calming for someone of my nature. I would not buy a tunnel again, however, especially one that slopes so much at one end.
I am surprised there isn't some kind of 'field replaceable' zip out there. Sea to Summit should bring out a zip slider that screws together or something. Moss and MSR did have a zip that could be taken apart, at one time.
If you are a heavy sleeper, the Nammatj should be excellent in winter, but if you are a light sleeper, a geodesic of the same weight might more suited. I don't know if Hilleberg prices are high or at least stable on the auction site - you may be able to buy and sell if you don't get on with it.
As usual, there is too much choice, but Hilleberg's excessive pricing, IMO, makes it a bit simpler. One could say there has never been a better time to be into wild camping.