The interface and speed of this piece of software are parts that I like a lot.
My main problem with this (default settings) is that it found some doubles and that you cannot select which one you want to keep. The software locks one of the files and and you can select if you want the other file to be moved, hard-linked, deleted, etc.
-Shades
There are a number of ways to change the original file selected in each set of duplicate files:
1. Open a set of duplicate files, select a duplicate file, press the right mouse button and select the 'Set as Original' menu item.
2. Select a number of duplicate file sets in the main view, press the right mouse button and select the 'Select -> Select Newest Files as Duplicates' menu item.
3. Select a number of duplicate file sets in the main view, press the right mouse button and select the 'Select -> Select Oldest Files as Duplicates' menu item.
4. Select a number of duplicate file sets in the main view, press the right mouse button and select the 'Select -> Select Duplicates by Location' menu item.