Unlike Spartan2 I think my mind has been changed.  I only started pumping water a couple of years ago and the pump I use is great - the Katadyn Pocket may be the best pump out there - and then, there's only two of us.  Still, pumping is a bit of pain, not a colossal pain, mind you, but given the option of pumping or not pumping I've gotta say, not pumping sounds alright to me.  I think this summer I'm going to give the Platypus a try.  Were I to do that, do you all think there would be any good reason to bring the pump as a backup?