Anyway, found the link today via http://www.survivalblog.com. These are very durable, I've used them for water, rice, and beans, and they stack up to about 4 tall without getting too unstable. You could get them taller with a bit of support. And, at 2.5 gallons, even full of water they aren't as hard to carry around as 5 gallon pails. They have added a 5 gallon version, and have quantity discounts.
Linky



