DI and Demin are basically the same,just different terminology as they use the same process to remove the Ion's.
However there is no industry standard for either as their applications can vary depending on what it is used for.Purchasing either is a lottery as if the conductivity of the water is not stated on the product,you could be buying tap water or worse.
You should be able to source EU pharma grade water in Italy,might cost a bit more,but it will be manufactured by an accredited company.
Analogue. Basis signature 2200,Basis Vector 4.Koetsu Red,Koetsu SUT,NVO SPA 11.
Digital. Denon 2900,Jolida FX 11
Amp. Pathos Logos,Minidsp dirac 22A.
Speakers. Amphion Xenon.
Airlink CBS 2000 bps