I can honestly say that I am concerned about all of the above. However, when do the risk factors out weigh the practicality of a certain water filter?

I don't want to spend a fortune on a filter that will do every bit as well as the $75.00 acme brand. I also don't want to spend $75.00 every time I have to use it because it was so cheaply built it breaks upon use. In a nutshell I am getting as much info from people that have experience and can give me enough input that I can make an informed purchace.

With that said... What do you have in your BOB?