I was hoping for some recommendarions. I have had a MSR Sweat Water for a few years. While I was recently looking for a replacement bottle of their water purification solution I saw that the Sweat Water was discontinued. What systems do you use / recommend? What kind of purification drops/tabs do you reccommend? I also have a Sawyer mini, but that is mainly for emergency or back up use. I like the Sweat Wtaer because of the abilty to pump and filter greater amounts of water. Thanks!