I agree about not trusting one report much less one that is posted on the Steripen site. I will say this (even though I am a strong supporter of steripen) that UV light has been extremely effective through many of my industrial career paths using ultra high pure water systems including (Lucent Technologies) and Nasa and that was another one of my decisions over the Miox.

On the other defense MSR and katadyn are very well established companies and I think that their products would work providing you wait the 4 hours. I have some micropurs as back up for the steripen but I haven't had any failures on mine and this last trip I went on ran up some good lamp time on the unit. I will be anxious to see what Doug pulls up with more updated accurate reports. One thing I know is I've never gotten sick off a steripen yet. As long as the lamp and circuit is good, I can run it with or without batteries in daylight for an indefinite amount of time. No need to carry salt,wood and tinder or tons of tablets. But tablets have there advantages as well too.