Sardinia Vs Siculy ??

Hi All,

My wife and I were in Mykonos last year, and till today and tomorrow we are dreaming of Mykonos,

Now we are planing to have another advanture and explor another island with same style romantic,luxurious, beach activities, parties, exciting nightlife and good food/resturants.

We have 9 days, So Sicily or Sardinia ?

And how long to stay in each ?? And Where ??

Appreciate your advise/recommendation in advance,