Hello,
I have a Jeo-Hunter as well. The small, medium, and large coils are nice to have. The good thing about the Jeo Hunter purchase is that you kind of get 3 systems in your set (though you cant use 2 separate systems from 1 set). The screen is easy to read, learning curve is medium, but cold weather and humid weather have messed with the battery on it, though that kind of stuff is expected. I use the medium coil most of the time and it does get tiring on the arm after about 15-20 minutes of detecting.
The Jeo Hunter does have great depth and can hit *most* all man-made cache or treasure targets that are up to 200-300 years old and long time buried. HOWEVER, the Jeo Hunter struggles in highly mineralized soils. We are talking soil in the 200-300ohms range. The Jeo Hunter sees a lot of 'hot rocks' and false targets. Proper ground balancing is crucial, and I feel that I know how to do it properly (after lots of practice), but it was to the point where we could no trust the unit to verify and generate targets. We were without another deep seeker that was suitable for the site at the time. Then again, if you cannot replicate the results over a suspected target, it may not be a real target. I have used the 'scan' feature on the Jeo Hunter and have generated a good and replicable target on 1 out of 10 sites. The other times that it "hit" something, I was unable to replicate the hot spots. Like I said, even with iron off, it picks up a lot of hot rocks that may get you too excited
All in all, after playing with it and other deep seekers, I realize that the Jeo Hunter is basically a low frequency metal detector hooked to software. The screen imaging is cool and fancy to have, but the same results can be manually hand made with a pen and graph paper with a super powered pulse detector (the ones at Accurate Locators or the overseas european ones).
If you have $5000 to spend, then try it. The small coil is nice for most consumer hobbyist applications, but the chest pack gets kinda bulky and redundant for just searching playgrounds and beaches. But maybe you want it for the deep stuff
You should also know that the support at Makro is slim to none. It is hard to get assistance from them. It seemed like all of my inquiries came back with the response of "you are not grounding balancing correctly". I do my best, I can assure that. The manual is kind of poorly put together with pictures from other units as reference and the english translation is poor in some areas. It makes it a challenge to learn such a cool and feature-full system. Also, there are no support videos online which is surprising. Makro really needs to jump on the video support bandwagon.
I hope this input has helped you
The best of luck.
bojangles
