I`m a long time user of this software on Windows XP OS and very contend with it.
I find that the features of this software like: the possibility of hiding of an entire operating system inside the free space of another operating system, pre-Boot authentication (login before starting the OS), multiple OS boot support (Microsoft), no size limitation for encrypted disks, steganography in order to hide data into picture, Trojan and keyboard sniffer protection preventing passwords from being sniffed / captured (red screen modus) , anti dictionary and brute-force attack mechanisms, USB-Token authentication at pre-boot level, recovery disk for "disaster recovery" and the fact that it is easy to install, deploy and use makes this product a valuable one to have and use.