Hey LarryW., I am an avid EXCALIBUR User, and have been using them for (5) yrs. Like Rick stated, if you are going to be waterhunting, and especially if you are working in brackish or cloudy water. You will find it much easier, if you GO with the 800 (8" coil), but if you are going to primarily hunt the beach, and only hunt the water up to your knees, you might want to GO with the 1000 (10" coil) for the bigger footprint. Waterhunting is a whole different animal, and alot more challenging, especially if you detect in brackish, cloudy water. Because, you have to use your feet to feel the location of the back or front of your coil underwater. Then mark your spot with the toes of your feet, while you move the coil out of the way, so that you can slide your long handled scoop in its place. Plus, recovery takes alot of practice, patience, and persistence, becuase you are sometimes battling the waves, and severe currents. Also, in response to Jerry's post, Minelab Headphones and coils are all hardwired into their detectors. Best of luck, and hh.