I learned about Aegina from others on this message board and we just returned from a day trip to the island from Athens. We had a very positive experience with a local independent guide, Sandy Kalamaras. Sandy is originally from Cape Town, South Africa but has lived on Aegina for "more than half her life". So I think that would mean she has lived on Aegina for 20+ years. She has a great deal of affection for the island and clearly knows of its nooks and crannies. She took us to wonderful sites a bit off the normal itinerary. It was a great day in the outdoors hiking and touring about. I highly recommend her. She can be reached at sandrakalamaras[at]gmail[dot]com.