I bought this coil from loverspulltabs(Gary) I have owned two of these coils and today was the first time in the field use.The reason the first coil was sold after an air test comparison between the older Sunray coil and the BBS 800 the older S-12 fell short of about 1/2 and inch so why lug this heavy coil on a hunt.This coil would be different but after an air test against the 7 1/4 inch coil the old Ultra depth lost by the same margin and seemed very lame.Yea I know the old story we don't find coins in the air but the matrix of the ground is the most important.Anyway during the two hour hunt in the park with this coil was pleasant surprise which in my opinion this coil is deeper than the 800 coil.The old Sunray gave a very smooth response and separated targets extremely well.One target gave three different tones blend together one side in the 160s in the middle a 180 the other end 150s.A plug was cut around the 180 signal and at a depth of about 7 inches recovered a 1947 silver Roosevelt dime.The signal was strong and smooth amazing on the bench an air test would not quite give 8 inches on a dime so this coil does work better in the field.I'm looking forward to the next couple of hunts to see how this coil performs.By the way the temp here in Michigan was around 52 degrees no wind nice to see the orange and yellow leafs on the trees a great fall day hunt.HH Ron