I can't decide on a water filter...
I have a well at my house, and I want a filter to be able to drink the water should the need arrise.
I was originally thinking a Big Berkee, but some of their current quality issues have me balking. That and the price is a little high.
Now I'm thinking of something smaller and more portable like a Katadyn Combi. That would give me a little more flexibility.
A pair of pliers and a blowtorch.