now that's better!
more specifically; given there are several sites...where would you recommend an experienced diver to go to?
A brief (and personal) list just to start, by italian region (further details can come),
Sicily: Ustica, that's a small island close to north Sicily coast. Close to Sicily there are a lot of islands that deserve attention: Egadi Isles, Lampedusa Isle, Linosa Isle.
Sardinia: a lot of wonderful places to dive in this island. You can choose the north (la Maddalena or Poltu Qualtu), the west (Alghero, Mal di Ventre, ...), the south (Villasimius, ...) and the east.
Calabria: the best is in the very south of the region. The "Stretto di Messina", where the ancient greeks had put the two mythological monsters, Scilla e Cariddi, is very rich because of the strenght of currents.
Puglia: the Tremiti Isles have very good dive spot, in the south part of Adriatic sea.
Campania: lot of places. Palinuro, Marina di Camerota, Sorrento, Capri, .....
Lazio: the isles of Ponza and Ventotene are good references.
Tuscany: Argentario and Isola d'Elba, Giglio e Giannutri. Very very nice.
Liguria: Portofino. The first protected marine area in Italy.
These are general references. If you like caves, the best are Alghero and Palinuro. If you like wrecks ... it depends on what you like and the depth you can dive. Eventually, there are a lot of lakes (unfortunately I live close to Garda lake, and the sea is not so close to my home): they are cold, dark, deep ... but they have their charm too.
Prego.
Ciao,
A.