Bests & Worsts Reviews from Amazon

I purchased this encrypting thumb to backup sensitive files from my PC hard drive in case of crash. I moved my files but discovered during setup that I had to *PURCHASE THE UPGRADE* -OF $15 RIPOFF DOLLARS- if I wanted to use the drive across platforms or other PC's. The thumb is useless if your computer crashes because it will not work on any other computer to retrieve the lost files. No where in the advertising does it mention extortion payments for upgrade. I have not owned the drive long enough to rate it's performance. BUT I SURE FEEL BURNED... I feel like a chicken who's been PLUCKED- don't let SanDisk PLUCK you. In fact scamdisk- GO PLUCK YOURSELF! SanDisk -just another shameless cheat- and champion of the RIPPOFF culture.