I was in the same boat as you and ended up going with the Soulo. The thing has a phenomenal track record for handling some crazy conditions. I also wanted a vestibule area to put my pack and boots and also to do my water boiling/cooking. I could have made the Unna work, but I'm sure it would have been dirty inside at times and I really despise dirt and mud near my sleeping bag and pad. The Soulo is stout and goes up quickly with very little practice. It's not the lightest solo shelter, but I have solid faith in the way thins thing is built and laid out to handle big winds off glaciers and snow loads.