I think hunting in some areas of a park with a one tone machine would be a nightmare too. But if you were searching an older home site, one tone with low disc is what you want ( to get the older nickels, indianheads, large cents, gold jewelry) One tone with low disc makes sense to me as well for the ball fields, if you set the disc to above a zinc, you could miss a nice larger gold ring, which is the point of searching a ball field in the first place.
For play areas at parks, areas where a lot of people are congregating, sitting, jumping, watching a game, etc... Well that is where I would want a machine with multi tones, like the golden umax. But even then, if you make the decision to ignore a tone signal or a TID reading because it is in the same range as zinc pennies or pull tabs, you COULD be ignoring gold. It seems to me that the Vaquero or Outlaw is a machine for the kind of guy who does not want to ignore ANY good signal, dig it all to get it all, but with a detector that has a great discriminator that will eliminate the trash you don't want to hear, that particular day for that particular setting. That's what is so nice about Tesoros, different machines for different settings, each having their own strength/weakness... But I think that's part of the fun of it. Tesoros are simple to use, with effective discriminators, and most of all affordable with a lifetime warranty.
I like the idea of using different machines for different settings/search areas. So for example, when I decide I want to try fresh water beach hunting, I am going to want a machine designed for this task, (not an all terrain detector set up)... Like the Tesoro Tiger Shark.
