Justifications for upgrading to 2.x

What major improvements does Beyond Compare v2.x have over v1.9?

I am trying to convince our purchasing department to upgrade our BC 1.9 licence to 2.x, but can only find revision history since 2.0.

Cheers

[Tim]

Here's a link (http://www.scootersoftware.com/download.php?c=new) to a summary of changes from 1.9 to 2.0.