The syncronize option lets me choose to compare by date or size etc. I would like to see the option to compare by name ony. ie. find orphans on either side.
I would then be able to choose for each orphan on each side whether I want to sync it across or delete it.
Makes sense, thanks for the suggestions.
FWIW, you can do something similar, non-recursively using Edit -> Select Other -> Select Source-not-in-Destination. (It won't help with files in sub-directories, though.)