SwishMax (a Flash authoring application which I use a lot) has just released version 2. You can get a 15-day trial here: SwishMax
It is not only cheaper than Adobe's offering, it is a lot easier to use (for me at least). Coding is given equal weight to layout (you can swap between Layout and Script view by tabs).
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman