All I can say is that it's quick at scanning, seems similar to restoration, free undelete and smart NTFS.
Whether it's any better than the above I don't know.
Apparently Avira have just taken over Datapol and this is a freeware version of the following tool:http://www.datapol.de/dpe/recovery/unerase/index.html
CIA UnErase is the first choice for recovery of deleted data when using Windows NT, Windows 2000 and Windows XP. CIA UnErase is based on completely novel datapol technology, which enables the user to restore deleted data with high probability and in a fast and simple manner.
There is no necessity to preventively install CIA UnErase. It can be used after bad luck has struck.
The BUSINESS version offers complete network support for all commonly used network protocols. No software needs to be installed on the target computer. From your desktop, you are in control of all the computers in the network.