Sorry I don't have anything to contribute to the "aural" vs FTx discussion. But I did get this interesting popup ad (which mught belong on TowerTalk intead of here) : https://www.voltlighting.com/flexible-auger-drill-bit-54?gclid=CjwKCAjw2OiaBhBSEiwAh2ZSPzVSFZkAHSmydVCZekEC7s0Kc7YIxQiRE0fikQL4fgkY9PfV0H-M_RoCtywQAvD_BwE 73, Art K3KU