I use recycled 55 gallon plastic cooking sherry drums. They run around $20. I then make a cradle out of two by fours to hold the drums horizontally. The taller the cradle the larger the container you can fill from the drum. I replace one bung with a 90 degree plastic elbow. One end of the elbow is threaded male which goes into the drum and the female end I thread the bung back in. The drum is on the cradle such that this bung is at the top and the 90 degree elbow faces up. I fill the drum through this bung. The other bung is replaced by an adapter with a 3/4 or 1 inch female threaded hole. Into this hole, I place a 90 degree ball valve faucet. This is the end I take water out of the drum. Gravity empties the drum. No pump or power needed.

I use this method in elk camp. I take two drums in my pickup truck. One is full and one is empty. When camp is setup, I assemble a cradle with an empty drum. I run a hose from the faucet of the full drum in the truck and fill the empty one in the cradle in the tent. Again, gravity does all the work as long as the full drum is higher then the empty drum! This way no one has to man handle a drum full of water.