Just got my golden umax's that I found used, they came and were in new condition. Got one for the wife and I, must say I agree with 53 silver, if I knew what a good machine they are I would have bought one years ago. What stopped me was the none adjustable ground balance. Took it out in my coin garden and was surprised at the depth I was hitting everything at 6 inches which you would expect, but was hitting some of my coins at 9 inches, which kind of blow my away , my ground is fairly low mineralized, but still. Took it over to my brothers house which predates civil war and some of worst iron infested ground that I ever hunted. Left the stock coil on it, to get a good feel for the detector. The first thing I noticed was the fast recovery that it has. It was able in a single swing to hit all the iron in that pass which is about 3 to 5 hits and recover and voice all of them and anything else that may be by . I was running min disc, but still had the tones so it was like the cortes running in all metal and still giving me all the information on the Vdi. I do believe run in Min disc with it super tuned is deeper than in the all metal mode. It's gonna take many hours of exhausting field research to come to a final conclusion, but all in the name of science. My wife had her vaquero, and ends up picking a indian head penny 1893 in great shape and I went home empty handed.