Changing the sprite of sprite instance better?

I have seen the forums saying that instances have better cpu performances than introducing objects.So,does this still apply as I change the sprite of the sprite instance for every instance I make.

Change the sprite of the sprite instance means?

For example,my sprite object has apple drawn on it.I instance this apple sprite and change the apple to orange.

The bit about instances you reference earlier is because many instances of say an apple would use the same one graphic loaded into memory. What you are proposing would be the same as many objects with one graphic, instead you have one object with many graphics. No difference I think, same number of graphics.

Thank you very much for the answer.Ok,then got it.