I downloaded this after weighing the choices of a few others. What I really like about this program is that the user-interface is so helpful.

There are numerous ways of viewing the data, of comparing and contrasting folders to see exactly where the duplicates are.

You then have quite a decision about what to delete and what to keep but at least you know what the parameters are. And there is a very useful option of deleting files but never deleting the last file in a group of duplicates.

I have had no stability issues at all.

I have a lot of duplicate files and I'm just beginning to learn the hang of this program but it promises to be very good. i'll post an update in a few days.