I have ProAnimator. I wish I had Invigorator Pro. I am used to working with keyframes. I can’t get ProAnimator to do, what I want it to do because of the method without keyframes.
You have to pose objects in time, that is nice and fast, transitions from pose a to b are automatically made. But to have an object split and bend and fly in a certain way, that is hell. I can never get exactly what I want, just allmost. Camera animation makes me lose objects forever and start all over again. It is taking me more time in the end, than when I use Lightwave 3D.
There are many presets to make things fly. Press at random until you get something you like. Problems rise when your customer wants it a bit like this or that. Then you have to look for ages which slider could do that. There is no keyframe to change.
Also skinning and extruding is done with a nasty spline interface. You must bend your mind to change the thing you want to.
It is very fast to get a 70% result. It is very slow to get a 90% result.