Hi
Thanks to everybody for all the information and links (containing great information and pictures) you have given me.
In some ways the two islands appear very similar and both sound exactly what we would be looking for, we both find it very easy to 'chill' and get in to the laid back attitude of the Greeks, so if there is not much going on, or not very many tavernas / bars this would not be a problem as we are happy to wander and view various areas of the island.
I have discovered that it is possible to stay a week in Halki, followed by a week in Symi, so I think I may do this.
To be honest I dont think I can choose one island over the other, I think I will feel that I have missed out on something if I don't visit both the islands.
Just a quick mention and thanks to Astrid, your pictures and report are excellent.
Graham