The OEM version is indeed 10 euros cheaper, but absolutely no update is apparently possible, not even bug fixes can be uploaded. In my case, remained in some cases, the PC hang when shutting down if a backup ran, and settled even after the same no longer operate. According to the Internet a known bug, but I made these reasons now can not fix. The downloaded update file Date accepted namely not the serial number of the OEM version. Registration was not possible also.
Akronis does itself with its restrictive licensing policy no favors. One can understand that the installation on multiple PCs is not desirable, and are therefore introduced in the 2012 version of Microsoft-related restrictions still. A version without any debugging is however totally unacceptable.