The reason I ask is because I just realized that the detector technology in my main detector (Minelab Sovereign XS) is now 30 years old! It was basically unchanged through all the Sovereign iterations from 1991-2005. The XS that I currently swing is about 25-27 yrs old but the technology it uses is 30 now! Amazing how well the Sovereigns have withstood the test of time. A proven detector for sure! Your thoughts? HH George Fatizzi