DI2 would be best suited for relic hunting imo or a non trashy coin hunt. DI3 is "the" coin mode by all means, although it could easily be the coin and relic mode. DI3, Killer on coins audibly. You don't even have to look at the TID when in DI3 the good targets become so obvious sounding once learned. Even down in the mid tone, the nickel will sound great just mid tone. I call it stop you dead in your tracks obvious good sound, once learned. Overload on these machines, they will overload in a skinny minute. Just raise the coil a little and hear the sound of what caused of the overload. It will become second nature quick. The small coil, if you don't get one, get one! I'm convinced after quite a few hours, there are hardly any iffy signals. If it doesn't lock on a target and is jumpy on the TID just keep swinging. Stock and small coil will isolate a target better than anything I've ever ran.Small coil is what the detecting world will seek to be like, all the companies. Of utmost importance, there is nothing you can really adjust on these machines, they are slap daddy right straight out of the box. If you are used to adjusting and think you are gonna tinker and make it better, there's nothing to tinker with. What will become very obvious is you will have a burning desire to dig some of the iron breaking through, just move to the quarter side of it and it will show itself as good or bad, dig or no dig.