Finding duplicates songs in itunes

In iTunes, a very useful feature is Finding duplicate songs in itunes. Many of us have GBs of songs. If you just go to File -> Show Duplicates menu item. You can use this feature to help find all duplicates from your library. However, we have different versions of songs. To find the 'Exact Duplicate' hold down shift in Windows and the option key in Mac and go to File ->Show Exact Duplicates. With this button iTunes shows only true duplicates, and not other versions.