The most stable tent shape can vary from climate to climate. For example, a tube-shaped tent can handle heavy winds that come from one direction great, but tend to suffer if they are coming from multiple directions. Similarly, A-frame shapes are champs at handling heavy rain (and even snow) but result in significantly less usable floor space as a result. Rather than look for a single tent shape that can do it all, consider what kinds of weather conditions you are most likely to encounter, and look for a tent shape that can handle those appropriately while also maximizing living conditions.