JohnDeereGreen
Member
I have the Katadyn Hiker and the Steri-Pen. So far, no problems with the Steri-Pen, you just have to think about where you store it in your pack. Yeah, if you toss it in the bottom, you'll probably break the bulb, but as long as you are marginally careful, it does just fine. I put lithium batteries in it and used it on 2 4-5 day backpacking trips with no problems and just the one set of batteries. That being said, you don't get the volume out of it that you do from a larger filter like the Katadyn, but it sure does save some space in the bag. But I never go anywhere without my trusty steel mug (I think it holds 2 cups) that I can use if I absolutely had to boil water. I also should note that I wouldn't want to use it on water that was turbid.