I always buy these bags because of their quality. They barely cost more than the competition so why take the chance and have your food spoil?  In addition to buying in bulk and vacuum sealing, I use these for leftovers (including soup), my dogs dehydrated food (to extend freshness), herbs, and everything from my garden (who wants to pay $1.50 for one single green pepper at grocery store?).  My favorite thing is sealing single-serving portions and freezing. Never have to worry what I'll have for lunch or dinner if it's just for me.