I use 4 tall and narrow jugs up at my cabin, and when we go off and around from there, we pop 1 or 2 in the truck - planning to only be out for a couple of days.I've eyeballed those a few times on REI's website. I've got the "blue jug" and the spigot always leaks. I've thought about 1 or 2 smaller bags for daily use and use the blue jug as bulk water storage.
These bags just out-perform everything else for me. AND - you can use them as a shower!!!!