We had holidays in Greece, Santorini and then went to Kerkyra.
Certainly we liked more Kerkyra - it is very green and has few tourists inits northern part.
Nest year we go to Крит - want to see history of Greece in shape of PalaceKnossos - Greeks told us it is older than Acropolis in Athens!
Though it is better to go there in September - when it is not so hot!