As a action script coder you have some choices you may not have known about. One of which is my personal favorite named FlashDevelop found at http://www.flashdevelop.org. One of the great things about this coder IDE is that you can easly create a flash, flex or Air project complete with code hinting of custom classes. the other really cool function of this IDE is how it can make getters and setters as well as Event Listener methods just by selecting the var or eventlistener and using Ctrl+Shift+1. The other really great thing about this IDE it’s completely free. There is also a great snipit and template system.

Now as you may already can tell this IDE is a stronger alternative for the Flash IDE where as people who use Flex my feel they can already do most of the things that FlashDevelop provides in the flex builder. Even then you can’t go wrong with FlashDevelop since you can compile with the flex SDK or the Flash IDE from with in one place.