will all lose the settings when the detector is turned 'Off.' The Prizm 6T will retain your custom settings unless a.. You remove the batteries or b.. the batteries die.
Personally, I think that this isn't really such a bad thing, and here's why. First, metal detecting hobbyists come in a wide range of knowledge and experience. I am certain that the more a newcomer has to use a control or two the more likely they are going to learn what some adjustments can and can't do. With some up-line models, such as the MXT, a user has to learn the differences between the Coin & Jewelry and Relic modes; learn the effects tied in with the Gain control other than simply a sensitivity regulation; and learn when to and not to 'Lock' the Auto-Trac function. There's more but those three are in addition to learning about Discrimination adjustment.
Some models, such as the XLT or Spectra V3, certainly have a lot more to learn and master in the way of adjustments and are better suited to the hobbyist who detects more frequently and "gets into" detecting more so far as knowledge of functions and settings is concerned. Of all the controls that an average hobbyists might use, I think Discrimination is perhaps the most important. I can't begin to tell you how many times in the 4