I'm using the manticore myself and have found gold 3 timed the last piece was only 12 on the VDI it all depends on the ct and size of the gold object, also I've had Roman Celtic and hammered, one Edward 1st farthing a tiny coin was 10.5" deep, dig every signal until you know what the machine is telling you, when they say the manticore is 50% more powerful what it means in my experience is it will find smaller objects deeper than other machines, I've also got the deus 2 and on small targets the manticore is definitely deeper, the only complaint if you can call it that is the headphones are not even shower resistant. This is a tiny minim on a small toilet roll square that's on the paper design 6" down yesterday