Memory use

What uses less memory?

Use 1 object sprite for each image like this:

<img src="https://dl.dropboxusercontent.com/u/72359481/PA%C3%87OCArule2/images/backcave-sheet0.png" border="0" />

Or images in frames of 1 object, and use the frames:

<img src="https://dl.dropboxusercontent.com/u/72359481/PA%C3%87OCArule2/images/chao-sheet0.png" border="0" />

I doubt it makes much of a difference so it's probably best to prioritize what makes your events cleaner, more readable and easier to work with.

Personally I think too many objects is awkward with the C2 interface, turning all those objects into animations/frames inside one object and treating that as a 'group' is often easier.

Although if you really want to find out, you could test it yourself.

I guess just create 1000 of each with a loop on startup and check the memory usage with task manager

I try

1 object repeat 96 times FPS 30 CPU 0.146

29 diferent objects      FPS 31 CPU 0.139

So is realy better use 1 object and use each frame for each image in my Pc core i3 4gb ram its 3X faster

Those results don't look statistically different. I would go with however is cleaner, per keepee

Look: if i put 96 diferent sprites in same object like this

dl.dropboxusercontent.com/u/72359481/PA%C3%87OCArule2/images/chao-sheet0.png

Runs in 30 FPS

if i use 29 objects they will use the same o PC.

what is better to have 96 or 29 objects for the same price?

The difference is probably negligible.