Possible Duplicate:
What is the best (most productive) FLEX IDE?
i am new to flex. which ide is best for development
Possible Duplicate:
What is the best (most productive) FLEX IDE?
i am new to flex. which ide is best for development
It should be noted though that you can develop the same software with any of those programs; you can even do it with a simple text editor. But of course each of those programs offer tools that can speed up the development process.
Personally I use Flash Builder and I would recommend anyone to use that one. While some of the features of FDT Max are really interesting, the price is rather high and compared with Flash Builder the other versions just don't offer really important things (like the debugger). In addition, if you work with any other Adobe software, you'll love that Flash Builder integrates well with the other software, and there are other great tools like Flash Catalyst that work hand in hand with Flash Builder.
if you are a student then you get adobe flash builder 4 for free: