I have been using Hardy Heron for a while. Indeed there is not much difference between the previous version for me, but i am planning to write a review about my experince about it, later.
I was looking at the irongeek site and watching the video there related with webgoat project. I decided to check the Firebug at Firefox. If you are using Firefox 3.0b5 like me and want to use Firebug addon here are some links for you that you may use the 1.1 beta version of it.
I encounter some other solutions too.