I have a 15 gallon barrel. They will weigh approx 120lbs when full. The handle really could only be used for when they are empty.
I paid $35 for my barrel. I think $20 is a great deal. For $100 you could have enough water on hand for one month for 3 people. Assuming you can stay at your place.
I like the barrel because it allows me to store 15 gallons in an area that takes up less space than in 2 liter bottles. Even though 2 liters are WAY more versatile.
Each rack of 2 liter bottles holds 8 bottles, so you're only looking at 4 gallons of water per rack.
Those military racks would be most ideal I think, if money were not an issue.