You got yourself a great detector.
Best tip I can give you...after you ground balance switch the toggle to the "lock" position and use your "ground grab" button to update your GB every so often. By doing this, the machine still tracks the ground mineralization but does not make the changes until you ground grab. This will keep the "chattiness" down.
I found the presets to be very good but I did tend to run the disc a little lower.