Proanimator works with After Effects. I have used it for many years. It has a short learning curve and is capable of very sophisticated animation of 3D text, logos and even imported 3D models. Its not in the same league as Lightwave or Maya, but you can sit down and play with it for a few hours and end up with an animation that will wow your clients. I think you can demo it to make sure you like it before you buy it.
Tom Daigon
Avid DS / FCP / After Effects Editor
http://www.hdshotsandcuts.com