Here are my experiences with water storage containers.
I live in a dry cabin for the last two years now and haul my water weekly. Yes I'm that guy on the side of the Seward Highway filling up at the spring at MP 109. I use a fleet of 6 Colman blue jugs.
What I have found is they do get worn as the threaded caps are used. The spigots do get brittle like ntsqd stated and break. I get about 2 months out of a spigot with daily use and Colman sells replacements that I buy in bulk.
From what I have found with the folding type water carriers is that with constant use the handle starts to rip apart from the jug mostly from the weight of carrying the water. This type lasts about a month with daily use. I do like the spigot design better than the Coleman design. I will take the weak Coleman spigot over the catastrophic failure of the folding jug. The blue Coleman jugs do pour better when set on a ledge verses the folding ones that tend to roll off if not placed securely.
When traveling I use the MSR Black Dormetory Bags as they fit nicely with my MSR water filter that has the same thread pattern as a Nalgene. I also like the accessories that MSR has for them; like the shower hose, bite valve, or spigot and you can hang them for a gravity feed from your rack or tree.