I have been having trouble with my rectangular mash tun and unpredictable runoffs. I was going to build a manifold (to replace the ss braid) but figured i would give the round cooler type a try as well. I have been having trouble finding a 10 gal round cooler for a reasonable price. Today i drove by a yard sale and saw one for sale. I picked it up for $10 which was nice. He had a five gallon one too which i figured i would buy as well, maybe for some partial mashes or smaller batches as it was only $5.