I'd agree with Tnss.
In the uk, on an old site we pretty much dig everything above iron, no screen target ID needed, just tones, lots of small interesting relics and coins to be had, i'd say the Deus is number one seller for such sites, especially for stubble and ploughed fields, and the old guys love that its lightweight.
Personally i've only had the deus for a short while, i need more time with it, i do like the machine, i've been finding things on my sites where i thought i'd done a decent job on already. I'm not going to give you the normal line, ' it made my old previous sites come alive again' but it certainly works different in the soil to some other machines, as Tnss says it works well in 3D.
But so far, with limited time on the Deus, it isnt's the best for my sites, the Rutus is more suited, it's more of an all rounder and covers more bases but with little compromise in performance, it sees more odd shaped and thin relics which i enjoy finding.
I could run the Rutus in 2 tone and use the screen ID/hodo graph as backup, not so with the Deus, it has less feedback and i don't trust it in full tones around small iron on mid tone targets.
At the end of the day there both brilliant relic machines, we make our choices according to our needs.