Just like every person in the wilderness should have several ways for creating fire, so should they also have several ways of purifying water. To not have one of these to fall-back on or actually primarily rely on could be devestating in a post-EMP world. So every kit should always have a Kelly Kettle in it, in my opinion. And so buy one now while you still can, is my advice.
Rating: [5 of 5 Stars!]