I'm going to attempt my first all grain brew this weekend, and I need to build the mash tun this week. I was going to buy a round cooler from HD, but Lowes had a 40L square cooler for not much more than the 5 gallon I was looking at. I bought a 12" section of stainless braid for the round cooler, but I'm thinking it will be too small for the square one. Which would be better for a noob such as myself? If I do a manifold, I haven't decided on copper or PVC.