I love my Gravity Filter. It started out being a MSR, but because of availability I ended up with a Sawyer filter and the syringe is a life saver for backflushing. I quit dipping many moons ago for the most part because I had people in our group back then get the good old beaver fever and I don't care to experience that. I used a steri pen once and ended up with a mild case of Giardia in about the right timing for it to do it's thing. So filtering only seems like the smart thing to do. I've found the gravity to be pretty fast for what it is if you keep up with the back flushing and all.