I purchased two of these drives in mid-2010 as an extra layer of backup against regular hard drive failure. Information is backed-up to the drives, then the drives are stored in temperature controlled fire safes. I have to say that their interface, speed, reliability, etc has never been an issue ... except ... one of the drives just randomly died. Tech support has been helpful, but recovery of the information does not seem to be a viable option.
So, the moral of the story is: if you are going to use these drives as a backup for data which absolutely must be recovered upon drive failure (original pics, photos, other data), it may not be the best idea to use these drives - because if one fails, then you will never be able to get to it again (this is on design - and a good design for those would would rather have whatever data on these drives destroyed rather than fall into the wrong hands).
As I am not some super spy or anything, I have shifted my backup paradign to regular (cheaper) rugged hard drives .. which are again stored in fire safes. At least if those fail, I have means of recovering thd ata from the drives. Theses Apricorn drives will be relegated to storing data I do not really care if I lose (i.e. easily duplicated data) - making these now very very expensive and bulky flash drives.
Moral: unless you are a spy, government agent, pron purveyor, etc who needs a "Self destruct" feature on his data ... do not spend the extra money on these. Buy a cheaper, larger external drive and just keep it offsite in a safe deposit box.