Monte thank you for taking the time to explain the differences between the two and posting links to the videos. I have learned something today and I appreciate the help. I printed the Apex manual yesterday but it wasn't explaining the two functions well enough for this bonehead to understand.

Garrett Apex, Whites MXT w/ 5.9 Eclipse coil, Whites XLT w/ Blue Max 600 coil, Tesoro Bandido 2 Micro Max, Garrett Carrot