Manufacturers baffle me at times. I see you have a Diablo II. Tesoro produced a true gem of a detector, the uMax Diablo. It was the follow up to the Diablo II, great little nugget detector in a very light, compact package at only $499. They never gave it a proper chance and discontinued it. Tesoro would be well advised to re-introduce the model. They have the design and the housing, everything, so no development cost. It is highly sought after used and so pretty obvious new units would sell. If they could put a basic iron discrimination feature on it, so much the better.
But first they need to get their website back up and running!