That's great news Roger! I've got my eye on a Hilleberg tunnel tent (not telling which one because I want it to still be in stock). Haha. I'd love to read a survey and review on tunnel tents. My thinking on expedition tents (with zero personal experience of course), is that the same things that make them good for polar expeditions, peak summiting, etc., also would make for a tent that you could get many years of good use out of. Be it backpacking, winter camping, desert winds, whatever. If it's made sturdy enough to go to the poles, it should last the average user for a very long time.
Bob, I too have been reading a lot of great reviews about TNF's expedition tents. I guess they have a big following for good reason. From what I've been seeing, you have two styles to choose from in expedition tents; basecamp (built for heavy winds and snow loads...ie: dome style), or mobile (lighter weight, more living space, less snow and wind stability...ie: tunnel tents). Maybe someone with firsthand knowlege could let me know if these generalizations are correct or not.