I have considered a rectangular cooler. But, I decided to get one of these for a few reasons. First, it leaves open the possibility of fly sparging in the future; second, it is designed for liquids so I know that it is safe for this application; finally, the insides are much more durable than most rectangular coolers, which I've had crack over time in other applications. I know that I can buy 3-4 rectangular coolers for the same price but that just adds aggrivation over time and these things are not very recyclable.