Be for warned though that removal of the account or even a password change of the account for the encrypted file/folders will result in non access even by an Administrator.
Sounds pretty secure to me 
I've done a bit of reading, and the encryption technique uses a public/private key pair, so I'm not sure why you think that a password change would be an issue (other than the user losing his key pair).
You can also designate a recovery agent, who will always be able to recover the data.
MS file system encryption best practices: http://support.microsoft.com/kb/223316/EN-US/
