Rock Chuck:
I have a single-burner propane stove similar to that. I use it to augment my Coleman two-burner "suitcase" stove when I need a third burner. They're very reliable and simple to operate. That design is a little too tall for my liking. Feels like it might be knocked over easily. I can't comment on how they work in real cold weather as I'm usually in a wall tent when base camping.
KC
If you stick with the larger 16 oz bottle and use the plastic base, they're fairly stable, but not as much as a shorter stove, of course. The smaller tall bottles can go over easily, though. The larger ones are also less prone to freezing up because they have less surface area.
I'm not inclined to pack either size around in a pack, though. They're pretty good for goat, llama, etc. packing when an extra pound won't hurt.
