These are what i recommend as well if you have room for them. I am lucky enough that my Brother in law works at a place that he can get them free. They came filled with an organic, non-toxic solution they use where he works. the stuff is safe enough you could drink the chemical safely. The only "side effect" is a nasty taste and gives you gas. So we rinse them several times, fill with water ad 1/2 gallon of bleach and let sit for a couple of days then drain and re-fill. I currently have 6 and am getting some more soon.Those should be good. I have the same but didn't get them from EE.
I also like the larger totes. I use these (in both 275 and 330 gallon sizes)
1 - soft drink bottling companies - - these places often buy their syrup in totes and barrels and all are safe when rinsed out. Some may have had a "soap" that tastes bad but is food-grade and will not harm the body. These can be used for storing water that you won't drink, like for bathing or watering plants.If you look around many companies have these that are empty and will give them away if you'll come get them.
there are lots of 275 gal water storage totes on Craigs now for 50-75 bucks eachCraigslist. I found empty 55 gallon pickle barrels for $20. They have a screw on two piece lid (think canning jar lid). I have blue barrels that held agave syrup that I bought for $8, the pickle barrels were MUCH easier to clean.
I have seen the 275 gallon totes on Craigslist also, they were anywhere from $75-150.