Full user review
"Light, Fast, Powerful, Shallow learning curve. FREE!!!"
No installation needed. Works from any drive, even USB's. Processed a large number of files quickly. Can be installed in one location & pointed to any other drive or folder. Choices on how you want to delete batches, including Automatically.
It's not for dummies. No warnings if you are about to do something that will cause harm to your system, which is easy to do. The Menu Options for searching and deleting are limitied but, hey its FREE.
I used in folders with over 2,500 files and it didn't choke or bog down. It's easy to compare supposed duplicate files attributes to decide yourself if they really are duplicates. But you have to pay attention and read the screen carefully so you know exacltly what it is you are about to do with your files, esp in batch modes.