Hi Ron.
The French DEUS is indeed an excellent detector, especially for those who primarrilly hunt for relativly thin-section 'hammered' coinage and gold pieces, in Europe/UK.
Ofcourse, it can be applied to any senario, but its original format was not competitive on salt water saturared sand. Never the less, in the hands of the adaptive/experience detectorist, then they can use its 4 frequencies (individually) to make impressive finds.
It is, THE most progressive step made in modern metal detecting applications.
Alan Lubez (hope I've spelt his name correctly?) being both a technologist and and interested in metal detecting, astutely leap-frogged the lethargic establishment and realised that the simplest mobile phone had a core process that if correctly adapted, would leave the major manufactures, limping in their efforts to stay in the race.
In the UK, it has overwhelmed all other brands. Even its exorbitant cost, has not deferred the avid detectorist. It is often 'poorly' applied, in terms of how versatile its functionalities are.
Even so, it more than rewards those who 'make up for their lack of awareness' of it potental, by simply detecting for longer periods, due to its delightful ergonomics.
Visit the Findmall Deus forum, and sample the US fraternities view on matters....Matt