Performance of animation on iPad

Hi,
I was just looking for some tips on how to keep performance as optimal as possible.

We want to have multiple animated characters on the iPad what has been the maximum number of animated characters you ever had running smoothly on a iPad?

Are there need little tips or tricks I can use to still get dynamic batching or other performance increases?

Does a bone animation have the most performance or is it wiser to have vertex interpolated animations?

Is the highest in animation performance a hierarchy animation without mesh deformation?

How do you get as much characters on screen as possible?

Skinned meshes will manipulate at the same speed on an iPhone 4 as an iPad, and realistically pretty similiar on a 3GS… The main difference of course is that there’s 5.2x the area to render on an iPad, so the GPU is already very heavily taxed.