Found DirSyncPro some days ago after failing to manage some 10.000 pics using explorer and other explorer-like software on WIN7. DirSyncPro did the job without any problem. So far a great program! One of the 4 newcomers to my toolbox this year. But it took me some time to find out how to make the settings.
There is just a simple job: make a copy of all new or modified files to another medium to have an additional data backup. Normally I am using xcopy with some parameters.
1. First I started using "contribute A -> B". But I found out that files which had been modified had not been selected. Later on I learned to use "synchronize (custom)" and after doing some settings it did what I wanted to do. My suggestion is to provide a simple way for a simple job for beginners who want to make a backup copy leaving existing files untouched except files which have been modified.
2. May be I did not find the right menu-point but I could not see the overall size of all files selected. To know what amount of data is selected could help on two issues:
2.1 Wrong selection of directory (can be seen when amount of data is unexpectedly big or small).
2.2 Selection is OK but there is not enough space on the target directory.