If any of you guys haven't seen the sawyer water filters, I can highly recommend them. I have a SP122 model and have been using mine as a gravity filter and as part of my hydration bladder set up for 3 years now and it still works great. If you back flush it whenever you use it and don't let it freeze, it will last you a long time.
They have just released the Sawyer Mini. It has the same filter as the squeeze and SP122(0.1 micron) but has shaved a fair bit of weight off the casing.
These guys have a sale on with the new minis.
http://www.highwaterfilters.com/sawy...ducts-s/70.htm
No affiliation, just a quality product at a nice price.