In some ways I like the SteriPen and in others I don't.

My main concerns with the SteriPen are; One, that with UV treatment you're still drinking any sludge you didn't filter out by other mechanical means; and Two, electronics seem to fail me often even though I take very good care of them.

Using filters like the Big Berkey you have the container and the filter elements to deal with. Whereas with something like a SteriPen with rechargeable batteries you have the Pen, the Batteries, the Charger, and the Solar panel that need to function.

That's just my two cents though. I could be wrong.

Truthfully, I'd really like to have both. LOL