We have a 5gl collapsible water jug; it is easy to store and see the water level, but a hard side might be easier to fill and pour (less spills).
I have to say that I actually put a plastic bag around my container when I fill at the CG fresh water spigots when I have to put it on the ground; too many people do their dishes and wash some questionable clothing items and body parts at the taps and I dont want the remnants of somebodies *insert word here* stuck to the bottom of my jug.
2010 Dodge Ram 1500
2012 Rockwood 2306
DH (Alan), DD (Madison) and Zoey the lab,