Duplicate Photo Sorting software

[dubai_phil]

OK so I have like photos everywhere, backed up ones and ones from old broken machines and I have often managed to download an entire SD card more than once with different tags.

 

So anyone out there ever used any of these Duplicate Photo checking softwares>

 

Any other suggestions?

 

I must have half my storage taken up with pics & vids and so many duplicates.Tried to sort them manually once and lost a whole bunch so had to restore from back up and woosh triplicates

 

Help?