In response to a lengthy, undeniably informative, but somewhat snide posting appearing above regarding the comparison of differently engineered detectors and coils to the comparing of apples vs. oranges, I wish to make a few remarks, primarily this: I will not argue with the assertion that comparing different detectors, for the reasons given, can be misleading. However, there is one criterion that overrides everything - for me, anyway - which is this: does detector A, with its stock coil, find more good targets than detector B, with its stock coil, in the same ground, given that the user is equally adept at using both machines and both A and B cost approximately the same? If the answer is yes, then as far as I am concerned, one machine is better than the other, regardless of design. Based upon the aforementioned, and having observed how a Minelab Explorer owner was finding many more coins at the beach than I was with my DFX, along with my discussions with this and another individual who sold their DFX machines for the Minelab, and had no regrets whatsoever, I will continue to recommend that anyone in the market for a DFX should give serious thought to purchasing a Minelab Explorer instead. Issues such as the weight of the machine or its speed in finding targets are secondary to me; if I had to sacrifice lightness of weight and speed in order to find old silver coins at 8" or deeper, I would take such a machine any day. And that machine, I believe, would be the Minelab. There may be machines that are just as good, but I am unfamiliar with them. I have seen what the Minelab can do, and I'm deeply impressed. It outperforms my machine, stock coil versus stock coil. Hoping to find deeper targets, I purchased a larger search coil for my DFX (I believe it's a 12" coil, I forget), but its performance was disappointing. I may do better with another coil for the DFX, but I don't want to gamble. I will ask this, however: does any search coil compatible with the DFX result in a more widescan performance, so that the machine "sees" more of the ground width-wise at greater depths? And if so, would the performance of the DFX then be more similar to that of the Minelab?
Lastly, I wish to make another comparison, and if it's comparing apples to oranges again, then so be it. Many older hi-fi magazines (Consumer's Reports, while more of a generalist magazine, still does this) rated hi-fi components such as amplifiers, preamps, CD players, etc. solely by lab measurements, not by how they actually sounded. I believe that air tests and test gardens used to evaluate metal detectors are inadequate for this purpose, although I am not saying that they have no merit whatsoever. The best test of a detector is how it actually performs in the field. And, I'll say it again - I've seen what the Minelab can do with its stock coil attached. It smokes the DFX. Period.