I have seen both of these tents and own a Hilleberg Nallo 3GT and the Stephensons.
Comments:
– I hate the fact that the Stephensons does not have a vestibule. When you open the door, rain will come straight into the tent. And you have to leave your wet gear outside. Also, you are forced to cook inside the tent.
– Sealing the Stephensons is messy and it’s not clear how good a job you have done until you test it and have to re-seal again.
– It is difficult to get the Hilleberg tight enough to shed snow really well. The Stephensons is a bit better in this regard.
– The inside room in the Hilleberg is probably less than the Stephensons
– For really windy conditions above the treeline, I would prefer a four pole tent so I don’t hear flapping walls all night long in both of these tents. However, if you can find places to camp where there is some shelter, this would not be a determining factor
– You can pitch the Stephensons tent really tight, probably tighter than the Hilleberg
– Consider the Stephensons 3R, the extra room in wet conditions would be worth it
– Condenstaion in the Stephensons is worse, as it is really a 1.5 wall tent.
In my opinion, these tents fill a niche. They are useful when the weather is miserable and you just cant stand being in a tarp but they are not full on four season shelters.
If I had to buy again, I would consider this tent http://www.hilleberg.com/2006%20Products/NewJannu.htm for its extra strength in high wind.