Re: What's going to be your next new detector?
I own a DFX. which I've had for over four years. Before that, I had a Bounty Hunter 202, which was purchased at Wal-Mart. The latter machine was unable to discriminate good targets, such as rings and coins, from rusty iron, and was tedious and frustrating to use; essentially, it was little better than a toy, and I returned it for a full refund after using it for a few months (Wal-Mart is good in that respect). While the DFX is much "'smarter" than the BH machine in that it much more reliably identifies good targets, I have yet to adjust the DFX successfully to increase depth significantly. Quarters deeper than 6.5", for example, will not be readily detected, and smaller coins, such as silver dimes (I really don't want corroded copper coins, even if they're old Indian cents, as their value is minimal), will not be detected much below 4". Once, for some reason, I found a silver dime at about 6"-8", but that was an aberration, and my settings were the same as those I typically use.
Anyway, I have met several detectorists who own and use Minelab Explorer SEs, with great success. Two of them owned the DFX previously, but sold them, preferring the Minelab for its significantly greater ability to find deep coins (dimes, say, at 8", and quarters two feet down in dry sand at the beach). One of the Minelab owners, whom I met while the two of us were beach hunting a few weeks ago, was finding coins my DFX could not not, as the coins were beyond the ability of my stock coil to "see" them. Before I spoke to him, I watched him walking along the beach with scoop and shovel in hand, stopping every few feet to dig out a coin, whereas I was finding virtually nothing in the same period of time. He told me that even on heavily raked beaches, he routinely finds $10 worth of coins per hunt; it took me five days of beach hunting with my DFX to find $10 in change, hunting between one and three hours daily...hardly worth the effort. Both Minelab owners who were former DFX owners explained that not only does the Minelab Explorer II go significantly deeper, it also "sees" more of the ground than the DFX at greater depths, as the DFX's window can be likened to an upside down ice cream cone, which covers less and less ground as depth increases, whereas the Minelab's window is the entire diameter of the search coil, regardless of depth. So one can find more targets both in terms of depth and width.
So buy a Minelab Explorer II if your budget allows, versus a DFX. It's possible that the DFX will go deeper with a different search coil, but I'm skeptical. I bought the Jimmy Sierra HotShot coil several years ago, and I found the stock coil to be superior in every way. Anyone want mine? Make me an offer for the coil, you DFX and MXT users. Maybe you'll have better luck with it than I did. And, by the way, by all accounts the MXT goes deeper than the DFX, and it's cheaper...but it lacks some of the DFX's features.