Minelab certainly gives a variety of tone settings and guess one could argue why and how one works best for them...from one tone to multiple tones certainly gives us quite a variety and my advice experiment as to what works better for you as we all have different, hearing, headphones and just personal preferences. Once you find one that works for you stay with it as its counterproductive to keep switching and many do well with their choice. To compare the multi tones of say an Explorer, Safar with an X-terra...well they are not the same and if you use both might opt for a different option on the X-terra lest you go tonal inept as learning one or the other takes time to be efficient and agree could get quite confusing even if you have the ability tt tell tones very well...