hearing preferences. Whether you like the sharp audio blast of the higher-pitched Relic mode audio, or if you want to hear both rejected targets (lower tone) and acepted targets (higher tone), or if you prefer some of the more subtle and softer audio of the C&J mode.
While there are many sites I like to hunt in Relic mode, centered trigger w/Disc. near preset to reject most nails and some foil, there are other times I prefer a forward trigger w/'0' Disc. to hear that sharp audio report of all non-ferrous targets. Then, too, I also like a forward trigger w/Disc. at preset so that I DON'T hear the rejected junk but still get the sharp audio report from accepted targets.
But I also find that quite often the Relic mode can be a little noisier in operation since it can produce more of those sharper audio squeels in really bad ground environments or from some outside interference sources.
Often, I enjoy just hunting in the Coin & Jewelry mode. Because there isn't the audio response alert it doers get the users glancing at they TID display a little more often, but I just like the comfortable audio response of that mode. It lets me concentrate on some of the deeper-responding targets.
In the Relic mode, the deeper targets that are desireable often tend to come in with more of a rejected audio and you might pass on them. In C&J mode they are just softer but similar in audio tone quality.
The nice thing is that the MXT does provide the options that it does so the operator can change things up at a site to suit them.
<EM><STRONG>Monte</STRONG></EM>
PS: I also find that when I am 'bushwhacking' with a smaller coil, such as my 5" EXcelerator, I prefer to switch into the Relic mode, while 'general hunting' in an open area with a 950 (that won't happen much any more), a 5.3 Eclipse (a good White's all-purpose choice) or the 8" DD EXcelerator (that'll be the one I use for most hunting now) will more often be done in the Coin & Jewelry mode. Thus coil selection can also play a part in the operating mode you prefer.