Question: I am in the process of upgrading my computer to a larger SSD as Windows system drive.

My problem is that the old SSD has a very annoying trait of choosing some random old data to present for deleted sectors - and over time a lot of this has accumulated at the tail end of files that don't fill the last cluster completely. No matter what I tried so far to clean this up has done any good, the more I try the more old garbage the drive seems to pull out of its hidden storage pool - so much in fact that a blanket cloning of the drive is completely out of the question. I want this data gone for my upgrade.

Does anybody know some drive cloning software that copies only the actual content of the files and not entire sectors?

Answer: 
I'm really not quite sure what the problem is your referencing and, to be honest, I wonder if you're suffering from a case of "A little knowledge...". Hard drives do accumulate dead data, but it's unlikely to be of any concern whatsoever while the file system is doing its job. Even less on on an SSD where seek times are essentially null.

Anyway, what you're after is pretty much the default anyway - you simply want a piece of software which does a file system aware file and partition copy - rather than a bit for bit forensic copy. The latter takes MUCH MUCH longer and so is rarely the standard.

CloneZilla should do what you need, but so should any consumer off the shelf cloning software.
What's you're looking for it's a driver's backup and restore. Check there: [Windows Driver Backup and Restore](http://www.techsupportalert.com/best-free-windows-driver-backup.htm)