There are a couple reasons we don't use the #10 cans. The shelf life only applies if you haven't opened the can...once opened and exposed to oxygen, you pretty much need to use the contents within a year or so. Not a problem, as long as you don't mind eating 30 servings of the same flavor in that time frame. Luke and I eat approx 180 dehydrated entrees a year, and we like having between 10-15 different flavors in our rotation, so the pouches work better for us. Since we eat right out of the pouches anyway, I can save the time I would otherwise have to spend measuring and bagging or vacuum sealing. Just grab the number of entrees we need and head out. It's the same food, so it's likely a good option for many especially the guys who are repackaging their meals anyway. For us and what we do, we will stick to the pouches.