I have the Headhunter Underwater. I disagree with Terry. It's my favorite detector. So easy to use. Only three knobs, power/vol. Disc. and Sens. Electronics are in the headphones, rechargable to 40 hrs per charge. Very loud repeatable signals, iron has a distinct click to it. I really like that it has a straight cord instead of the coiled one that most detectors have, it doesn't tangle. It works in fresh and salt water without falsing. So glad I chose the DP over the ATpro. Granted, it doesn't have an LED, so clad, silver and gold, and pop tops all sound alike, so you have to dig all of the good signals. But, in the water, I dig everything anyway. And it's also great at tot lots.
Terry, what do you not like about it?