I only asked about the 100a because it was a free upgrade!
Thanks for the link.
I see there are different materials for the element as well as the straight or wavy elements. I'm sure someone can argue for benefits or why they prefer one over another but is there really any performance difference??
Wavy are longer overall so they have a lower watt per inch and are said to less likely to scorch the wort. I have used both and never scorched any wort.
