i quite liked it to the point that i changed my OS to win 7 just so i can install EDGE. it has a new and thoughtful animation process which i found was interesting. But i don't know about its lifecycle post the release of Flash CS6 because flash also exports to html 5 now and does plenty more than what EDGE can do now.

I tried MUSE too, that is a great package aswell, really could takeover after Dreamweaver is my honest opinion.