Sandman, I think you misunderstood what he has. He was asking about the Fisher Impulse. I used to belong to a MD club here, and we wondered how all the beach machines did, so we all brought in our machines. The Fisher Impulse-made by Fisher not Tesoro- was pretty much as good as most any PI back then 10-12 years ago I think. But it would find in an air test a very,very thin gold chain, where none at that time PI could. Now some of the better ones, jewelry finders not shipwreck PIs, will. Back then it was a very sensitive PI, most werent that sensitive then. It is the only MD that Fisher makes that works well in salt water-the CZ20 works, but it is not a PI. The 1280 barely works in saltwater to the point of not finding stuff, unless it is big.