Atherel
Oh and regarding the large TIF files, what limits are you hitting? Most hosters allow to change the php settings like memory limit or max execution time.
As others said, encrypt your backup before sending it to your server. And can’t you upload the files to a folder outside of a document root or better outside of the www folder so there is no way to access it through the web server service?
He’ll have to pay over 9000!
I had one Samsung Bar fail after two years, the second one still works.
At the moment I’m using a Philips Moon Edition USB stick but only since February. Can’t speak for long term usage and didn’t do any benchmark but I’m happy so far and the form factor would meet your criteria.
Our oldest is only 4 years old but when there is a flea market or a street market we give him some money he can use to buy stuff. This way he learns that he can’t buy everything he sees and has to set priorities.