That'll make it so you can't select the text in AS 3.0... what other interactivity were you worried about?
I'm not sure about mixing in mx classes with Flex.
I just wanted to use the smallest object possible, since I am going to be creating a ton of these sprites. Label seems to have less weight, so I preferred that over a textfield.
i think there are some kind of incompatibility issues for the mx classes and flash classes like you're saying, which seems pretty short sighted on adobe's part. Oh well, I guess I need to get a book discussing in detail the differences between the as3 compiler and the mxml compiler