Bests & Worsts Reviews from Amazon

I'm pretty impressed with this thing. I bought it for one purpose, so can only speak to that. When we established our property to build our house in a rural area, we had to have water lines and cable lines threaded through some trees. That was between 6 & 10 years ago. When we did it, I was forward thinking (I thought) and marked the lines with Survey Marking Whiskers. But over time, dirt, grass, leaves, mulch, and pine straw buried them, and any that were not buried suffered from the ultraviolet sunlight making the plastic tops of the whiskers brittle, and thus the tops disintegrated. Gradually, I found, I could no longer tell where my lines were. Today - after one or two little practice sessions, I went out with the Bounty Hunter TK4 and found ALL of my markers. I was hoping it would (and apparently did) find the large nail that was remaining below the surface, 4 to 10" below the surface. There is no way I could have located those lines without a metal detector. Other detectors may have found them; may have found them better. All I can say is - this did exactly what I needed it to do and so paid for itself in a few hours use! Anything else I do with it is gravy. Hopefully it will be useful in other ways and fun as well. In searching the last leg of water lines I got a ping where I was surprised to find one. So I switched to discrimination mode ... Got a LOW pitched buzz. Manual says ... nickel or GOLD! I'll dig in that place later. Who knows - it might MORE than pay for itself! LOL! Also, FYI, I found the one survey iron rod for a property corner that was close to where I was working that was hammered beneath ground level in a ditch. (I knew roughly where it was). A few more technical items: It is lightweight; easy to handle. It is easy to operate; the manual is clear. I'm a first time metal detector user & I feel fairly competent with it already for basic use. Pretty easy to put together, though I'm a little concerned about, as some mentioned, the lower stem to search coil intersection is plastic, with a knurled knob. If the parts are easily replaceable, no problem. Otherwise, might be a weak link that sinks the entire ship. I'm not a treasure hunter (yet) so this may not contain all the stuff you guys would be interested in, but I had read some questions that asked about the kind of interests I had with locating survey rods, etc., so decided to do a review from this perspective.