I've tested S-Max. I think it is extremely easy to use. My children will love it.
I'm very delighted to see the many export features:
> Screen Saver
> Slide Shows
+ PRINT function
One more thing... the templates are really catchy.
The kids will be excited to see their work on TV or share Screen Savers with friends. And they will no longer be shy to present their school projects to teachers and school mates.
A great creativity development tool for young children.