We spent a few days in the Greek Cyclades and were spoiled with beautiful sunsets everyday!
We loved Naxos! The people are extremely nice and welcoming, the food is cheap and comes in huge portions, and the beach is just perfect. I would love to go back to that island one day.
Santorini on the other hand was extremely touristy but is also very beautiful. If only it isn't very crowded then I would love to visit and wander around the streets of Fira and Oia again.