After mixed results in winter with the original Sierra Designs Flashlight and the Chouinard Pyramid I finally purchased this tent in 1989. It is a true 4 season tent.
This tent was used by the U.S. Antarctic Program (see this Field Manual). The tent weighs 6.2 lbs.
To be really secure in the worst weather the tent requires all tie-outs be used, which means 20 stakes. But it will handle just about anything Mother Nature can throw at you.