I'm looking for software that will allow me to move files from one folder to another, in Windows 7, but with the ability to create filters such as the following:

Filter #1:  If the file being moved has the same name, extension and size as a file already existing in the target folder, then overwrite the existing file.

Filter #2:  If the file being moved has the same name and extension as a file already existing in the target folder, but the two files are different in size, then move the file, but keep both files.

I've spent hours checking software, including software for finding and removing duplicate files, and haven't yet found anything with this feature.