Motion its good for some banners and on-screen graphics. If you have 2 moniors its better because Motion displays a huge list of animatable things for a single object.
From the Apple page looks like Motion cant do the same things that Shake do (or at last not the same way)
Shake looks like a more complete app
Another one its Combustion (Autodesk) I own the V4 and its very good for video post
Combustion $995USD
AfterEffects $999USD
Shake $499USD
the 3 can work with FinalCut but only shake can read FinalC projects
Hope this helps
