The mini. I've used it out west, just for giggles here around home and on several missions trips that I went on in places like Cuba, Bolivia, Trinidad and a few others.

I've been pleased. I have a couple of the Sawyer minis. They are slow if you're filling multiple bottles, bags, etc. But useful. The ones I have came with a straw attachment as well that you could use to drink from. But I only use it to refill bottles or bags for a hydration pack.
-Jake