Tween alternatives to the fl.transitions.*

I’m reprogramming my biggest Flash project ever in AS3 from the ground up, and it feels GRRRREAT! :party:

Except for the part that, since developing the AS2 version, I’ve tried moving away from Flash CS3 in favor of open-source libraries. This is relatively easy to do nowadays, since I can program using classes and not the timeline, but occasionally I’ll need to use tweens to animate stuff (in my user interface, for instance), and I’ll find myself importing fl.transitions.*.

I know there are a bunch of free alternatives out there, some of which are more flexible than the fl Tween object. But rather than trying them out one by one, I figure that some of you guys already know which free Tween systems are the best. Has anyone got a favorite that they could recommend?