Double Driver has a simple interface, and the program itself is very easy to use. Its noteable feature is that it can backup drivers from even an offline system. This is very useful in cases, where a system is unable to boot, for some reason. This feature, apart from others, gives it an edge over the other software. The only other software to have this feature in the category is DriverBackup!.
For backup, by default, non-Windows drivers are selected in the list. Options are available to invert this selection, to select all, or select none. Users may also select individual drivers of their choice, if they want. Drivers can be backed-up to structured folders(default option), as a compressed folder, or to a single self extract file. For the last option though, Double Driver crashed, when I tried to use it. Its a bug.
One other good thing about Double Driver is that it was able to back up drivers for devices which were not connected to the system at that time. My webcam was not connected, but even then, it backed up the driver files for that.
Restoration is also easy. Select the driver backup location, the folder where they were backed up previously, and it shows the list of drivers which can be restored. Again, options are available to choose which drivers to restore. The restoration process is quite fast too, and I will say its reliable.
Double Driver has the option to save the list of drivers in a text file. Option to print the list is also there. This feature is quite useful, to see which drivers have been installed on the system. The list is quite informational, providing name, version number, date, hardware ID etc.
Overall, Double Driver is simple, and very reliable, with some good features, making it the top choice in the category.