I have a Katadyn Pro bought several years ago for a trip to the Grand Canyon. Now looking to start doing some more hiking including a section of the AT. The Kpro is 11oz, and I see the Sawyer mini getting good reviews and only 2oz. I am starting to gather gear and while I know I will be buying some new stuff if what I have will work that is better for the wallet. My question is, for short hikes, like up to a 7-10 days, is the K Pro good enough? Or is it worth buying another filter to loose 9oz?