I second that on the Big Agnes. I've got a Sunnyslope 2 which is a bit older, but that dang thing WORKS. I went through a hail/rain storm this past summer in Colorado. The wx was so intense, that mud was splattered multiple feet up the side. Inside were our down bags. Not an ounce of moisture!

The tent is vey warm, so I wouldn't recommend it for hot and humid climates, but for cool, cold, or high altitude use, it's a great tent.